- Abbott's Babbler
- Abbott's Booby
- Abbott's Starling
- Abbott's Sunbird
- Abd al-Kuri Sparrow
- Abdim's Stork
- Aberdare Cisticola
- Aberrant Bush Warbler
- Abert's Towhee
- Abyssinian Catbird
- Abyssinian Crimsonwing
- Abyssinian Ground Hornbill
- Abyssinian Ground Thrush
- Abyssinian Longclaw
- Abyssinian Owl
- Abyssinian Roller
- Abyssinian Scimitarbill
- Abyssinian Slaty Flycatcher
- Abyssinian Thrush
- Abyssinian Waxbill
- Abyssinian Wheatear
- Abyssinian White-eye
- Abyssinian Woodpecker
- Acacia Pied Barbet
- Acacia Tit
- Acadian Flycatcher
- Aceh Bulbul
- Acorn Woodpecker
- Acre Antshrike
- Acre Tody-Tyrant
- Adamawa Turtle Dove
- Adelaide's Warbler
- Adelie Penguin
- Admiralty Cicadabird
- Afep Pigeon
- Afghan Babbler
- Afghan Snowfinch
- African Barred Owlet
- African Black Duck
- African Black Swift
- African Blue Flycatcher
- African Blue Tit
- African Broadbill
- African Citril
- African Collared Dove
- African Crake
- African Crimson-winged Finch
- African Cuckoo
- African Cuckoo-Hawk
- African Darter
- African Desert Warbler
- African Dusky Flycatcher
- African Dwarf Kingfisher
- African Emerald Cuckoo
- African Finfoot
- African Firefinch
- African Fish Eagle
- African Golden Oriole
- African Goshawk
- African Grass Owl
- African Green Pigeon
- African Grey Flycatcher
- African Grey Hornbill
- African Grey Woodpecker
- African Harrier-Hawk
- African Hawk-Eagle
- African Hill Babbler
- African Hobby
- African Hoopoe
- African Jacana
- African Marsh Harrier
- African Olive Pigeon
- African Openbill
- African Oystercatcher
- African Palm Swift
- African Paradise Flycatcher
- African Penguin
- African Piculet
- African Pied Hornbill
- African Pied Wagtail
- African Pipit
- African Pitta
- African Pygmy Goose
- African Pygmy Kingfisher
- African Rail
- African Red-eyed Bulbul
- African Reed Warbler
- African River Martin
- African Rock Pipit
- African Sacred Ibis
- African Scops Owl
- African Shrike-flycatcher
- African Silverbill
- African Skimmer
- African Snipe
- African Spoonbill
- African Spotted Creeper
- African Stonechat
- African Swamphen
- African Thrush
- African Wattled Lapwing
- African Wood Owl
- African Yellow Warbler
- Agami Heron
- Agile Tit-Tyrant
- Aguiguan Reed Warbler
- Agulhas Long-billed Lark
- Ahanta Spurfowl
- Ainley's Storm Petrel
- Akekee
- Akiapolaau
- Akikiki
- Akohekohe
- Akun Eagle-Owl
- Alagoas Antwren
- Alagoas Curassow
- Alagoas Foliage-gleaner
- Alagoas Tyrannulet
- Alaotra Grebe
- Albertine Owlet
- Albertine Sooty Boubou
- Albert's Lyrebird
- Aldabra Brush Warbler
- Aldabra Drongo
- Aldabra Fody
- Aldabra White-eye
- Alder Flycatcher
- Aleutian Tern
- Alexandrine Parakeet
- Algerian Nuthatch
- Allen's Gallinule
- Allen's Hummingbird
- Allpahuayo Antbird
- Alor Boobook
- Alor Myzomela
- Alpine Accentor
- Alpine Chough
- Alpine Leaf Warbler
- Alpine Pipit
- Alpine Swift
- Alpine Thrush
- Alström's Warbler
- Alta Floresta Antpitta
- Altai Accentor
- Altai Snowcock
- Altamira Oriole
- Altamira Yellowthroat
- Amami Thrush
- Amami Woodcock
- Amani Sunbird
- Amazilia Hummingbird
- Amazon Kingfisher
- Amazonian Antpitta
- Amazonian Antshrike
- Amazonian Barred Woodcreeper
- Amazonian Black Tyrant
- Amazonian Grosbeak
- Amazonian Inezia
- Amazonian Motmot
- Amazonian Pygmy Owl
- Amazonian Royal Flycatcher
- Amazonian Scrub Flycatcher
- Amazonian Streaked Antwren
- Amazonian Trogon
- Amazonian Umbrellabird
- Ambon White-eye
- Amboyna Cuckoo-Dove
- Ameline Swiftlet
- American Avocet
- American Barn Owl
- American Bittern
- American Black Duck
- American Black Swift
- American Bushtit
- American Cliff Swallow
- American Coot
- American Crow
- American Dipper
- American Dusky Flycatcher
- American Flamingo
- American Golden Plover
- American Goldfinch
- American Grey Flycatcher
- American Herring Gull
- American Kestrel
- American Oystercatcher
- American Pygmy Kingfisher
- American Redstart
- American Robin
- American Three-toed Woodpecker
- American Tree Sparrow
- American White Ibis
- American White Pelican
- American Wigeon
- American Woodcock
- American Yellow Warbler
- Amethyst Brown Dove
- Amethyst Sunbird
- Amethyst Woodstar
- Amethyst-throated Mountaingem
- Amethyst-throated Sunangel
- Amsterdam Albatross
- Amsterdam Wigeon
- Amur Falcon
- Amur Paradise Flycatcher
- Anambra Waxbill
- Ancash Tapaculo
- Anchieta's Barbet
- Anchieta's Sunbird
- Ancient Antwren
- Ancient Murrelet
- Andaman Bulbul
- Andaman Coucal
- Andaman Crake
- Andaman Cuckoo-Dove
- Andaman Cuckooshrike
- Andaman Drongo
- Andaman Flowerpecker
- Andaman Green Pigeon
- Andaman Hawk-Owl
- Andaman Masked Owl
- Andaman Nightjar
- Andaman Scops Owl
- Andaman Serpent Eagle
- Andaman Shama
- Andaman Teal
- Andaman Treepie
- Andaman Wood Pigeon
- Andaman Woodpecker
- Andean Avocet
- Andean Cock-of-the-rock
- Andean Condor
- Andean Coot
- Andean Duck
- Andean Emerald
- Andean Flamingo
- Andean Flicker
- Andean Goose
- Andean Guan
- Andean Gull
- Andean Hillstar
- Andean Ibis
- Andean Laniisoma
- Andean Lapwing
- Andean Motmot
- Andean Negrito
- Andean Parakeet
- Andean Potoo
- Andean Pygmy Owl
- Andean Siskin
- Andean Slaty Thrush
- Andean Solitaire
- Andean Swallow
- Andean Swift
- Andean Teal
- Andean Tinamou
- Andean Tit-Spinetail
- Angolan Batis
- Angolan Cave Chat
- Angolan Lark
- Angolan Slaty Flycatcher
- Angolan Swallow
- Angolan Waxbill
- Anhinga
- Anianiau
- Anjouan Brush Warbler
- Anjouan Scops Owl
- Anjouan Sunbird
- Ankober Serin
- Annam Prinia
- Anna's Hummingbird
- Annobon Paradise Flycatcher
- Annobon White-eye
- Ansorge's Greenbul
- Antarctic Petrel
- Antarctic Prion
- Antarctic Shag
- Antarctic Tern
- Anteater Chat
- Ant-eating Chat
- Anthony's Nightjar
- Antillean Crested Hummingbird
- Antillean Euphonia
- Antillean Mango
- Antillean Nighthawk
- Antillean Palm Swift
- Antillean Piculet
- Antillean Siskin
- Antioquia Bristle Tyrant
- Antioquia Brushfinch
- Antioquia Wren
- Antipodean Albatross
- Antipodes Parakeet
- Apapane
- Apical Flycatcher
- Aplomado Falcon
- Apo Myna
- Apo Sunbird
- Apolinar's Wren
- Apostlebird
- Appert's Tetraka
- Apricot-breasted Sunbird
- Apurimac Brushfinch
- Apurimac Spinetail
- Aquatic Warbler
- Arabian Accentor
- Arabian Babbler
- Arabian Bustard
- Arabian Golden Sparrow
- Arabian Golden-winged Grosbeak
- Arabian Partridge
- Arabian Scops Owl
- Arabian Serin
- Arabian Warbler
- Arabian Waxbill
- Arabian Wheatear
- Arabian Woodpecker
- Arafura Fantail
- Arafura Shrikethrush
- Araripe Manakin
- Araucaria Tit-Spinetail
- Archbold's Bowerbird
- Archbold's Newtonia
- Archbold's Nightjar
- Archer's Buzzard
- Archer's Ground Robin
- Archer's Lark
- Arctic Redpoll
- Arctic Tern
- Arctic Warbler
- Arfak Astrapia
- Arfak Catbird
- Arfak Honeyeater
- Aripuana Antwren
- Arizona Woodpecker
- Armenian Gull
- Arnot's Chat
- Arrowhead Piculet
- Arrowhead Warbler
- Arrow-marked Babbler
- Ascension Crake
- Ascension Frigatebird
- Ascension Night Heron
- Ashambu Laughingthrush
- Ash-breasted Antbird
- Ash-breasted Sierra Finch
- Ash-breasted Tit-Tyrant
- Ash-browed Spinetail
- Ash-colored Cuckoo
- Ash-colored Tapaculo
- Ash's Lark
- Ash-throated Antwren
- Ash-throated Casiornis
- Ash-throated Crake
- Ash-throated Flycatcher
- Ash-throated Gnateater
- Ash-winged Antwren
- Ashy Bulbul
- Ashy Cisticola
- Ashy Drongo
- Ashy Flowerpecker
- Ashy Flycatcher
- Ashy Minivet
- Ashy Myzomela
- Ashy Prinia
- Ashy Robin
- Ashy Starling
- Ashy Storm Petrel
- Ashy Tailorbird
- Ashy Thrush
- Ashy Tit
- Ashy Wood Pigeon
- Ashy Woodpecker
- Ashy Woodswallow
- Ashy-bellied White-eye
- Ashy-breasted Flycatcher
- Ashy-crowned Sparrow-Lark
- Ashy-faced Owl
- Ashy-fronted Bulbul
- Ashy-headed Babbler
- Ashy-headed Goose
- Ashy-headed Green Pigeon
- Ashy-headed Greenlet
- Ashy-headed Laughingthrush
- Ashy-headed Tyrannulet
- Ashy-throated Bush Tanager
- Ashy-throated Parrotbill
- Ashy-throated Warbler
- Asian Barred Owlet
- Asian Brown Flycatcher
- Asian Crimson-winged Finch
- Asian Desert Warbler
- Asian Dowitcher
- Asian Emerald Cuckoo
- Asian Fairy-bluebird
- Asian Glossy Starling
- Asian Golden Weaver
- Asian House Martin
- Asian Koel
- Asian Openbill
- Asian Palm Swift
- Asian Red-eyed Bulbul
- Asian Rosy Finch
- Asian Short-toed Lark
- Asian Stubtail
- Asir Magpie
- Asities
- Assam Laughingthrush
- Atherton Scrubwren
- Athi Short-toed Lark
- Atitlan Grebe
- Atiu Swiftlet
- Atlantic Canary
- Atlantic Petrel
- Atlantic Puffin
- Atlantic Royal Flycatcher
- Atlantic Yellow-nosed Albatross
- Atlas Pied Flycatcher
- Atoll Fruit Dove
- Atoll Starling
- Auckland Rail
- Auckland Shag
- Auckland Teal
- Audouin's Gull
- Audubon's Oriole
- Audubon's Shearwater
- Audubon's Warbler
- Augur Buzzard
- Austen's Brown Hornbill
- Austral Blackbird
- Austral Canastero
- Austral Negrito
- Austral Parakeet
- Austral Pygmy Owl
- Austral Rail
- Austral Thrush
- Australasian Bittern
- Australasian Darter
- Australasian Figbird
- Australasian Gannet
- Australasian Grebe
- Australasian Shoveler
- Australasian Swamphen
- Australian Boobook
- Australian Brushturkey
- Australian Bustard
- Australian Crake
- Australian Golden Whistler
- Australian Hobby
- Australian King Parrot
- Australian Logrunner
- Australian Magpie
- Australian Masked Owl
- Australian Owlet-nightjar
- Australian Painted-snipe
- Australian Pelican
- Australian Pied Cormorant
- Australian Pipit
- Australian Pratincole
- Australian Raven
- Australian Reed Warbler
- Australian Ringneck
- Australian Shelduck
- Australian Swiftlet
- Australian Tern
- Australian White Ibis
- Ayacucho Thistletail
- Ayeyarwady Bulbul
- Ayres's Hawk-Eagle
- Azara's Spinetail
- Azores Bullfinch
- Aztec Rail
- Aztec Thrush
- Azuero Dove
- Azure Dollarbird
- Azure Gallinule
- Azure Jay
- Azure Kingfisher
- Azure Tit
- Azure-breasted Pitta
- Azure-crested Flycatcher
- Azure-crowned Hummingbird
- Azure-hooded Jay
- Azure-naped Jay
- Azure-rumped Tanager
- Azure-shouldered Tanager
- Azure-winged Magpie
- Babbling Starling
- Bachman's Sparrow
- Bachman's Warbler
- Baer's Pochard
- Baglafecht Weaver
- Bagobo Babbler
- Bahama Mockingbird
- Bahama Oriole
- Bahama Swallow
- Bahama Warbler
- Bahama Woodstar
- Bahama Yellowthroat
- Bahia Antwren
- Bahia Spinetail
- Bahia Tapaculo
- Bahia Tyrannulet
- Baikal Bush Warbler
- Baikal Teal
- Baillon's Crake
- Baird's Flycatcher
- Baird's Junco
- Baird's Sandpiper
- Baird's Sparrow
- Baird's Trogon
- Baja Pygmy Owl
- Bald Eagle
- Bald Parrot
- Balearic Shearwater
- Balearic Warbler
- Bali Myna
- Balicassiao
- Baliem Whistler
- Balsas Screech Owl
- Baltimore Oriole
- Bamboo Antshrike
- Bamboo Foliage-gleaner
- Bamboo Warbler
- Bamboo Woodpecker
- Bamenda Apalis
- Bananal Antbird
- Bananaquit
- Banasura Laughingthrush
- Banda Myzomela
- Band-backed Wren
- Band-bellied Crake
- Band-bellied Owl
- Banded Antbird
- Banded Barbet
- Banded Bay Cuckoo
- Banded Broadbill
- Banded Cotinga
- Banded Fruit Dove
- Banded Green Sunbird
- Banded Ground Cuckoo
- Banded Honeyeater
- Banded Kestrel
- Banded Kingfisher
- Banded Lapwing
- Banded Martin
- Banded Parisoma
- Banded Prinia
- Banded Quail
- Banded Stilt
- Banded Wattle-eye
- Banded Whiteface
- Banded Woodpecker
- Banded Wren
- Banded Yellow Robin
- Band-rumped Storm Petrel
- Band-rumped Swift
- Band-tailed Antbird
- Band-tailed Antshrike
- Band-tailed Antwren
- Band-tailed Barbthroat
- Band-tailed Earthcreeper
- Band-tailed Fruiteater
- Band-tailed Guan
- Band-tailed Hornero
- Band-tailed Manakin
- Band-tailed Nighthawk
- Band-tailed Oropendola
- Band-tailed Pigeon
- Band-tailed Seedeater
- Band-tailed Sierra Finch
- Band-winged Nightjar
- Banggai Crow
- Banggai Fruit Dove
- Banggai Jungle Flycatcher
- Bangwa Forest Warbler
- Bank Cormorant
- Bank Myna
- Bannerman's Shearwater
- Bannerman's Sunbird
- Bannerman's Turaco
- Bannerman's Weaver
- Barau's Petrel
- Bar-backed Partridge
- Barbados Bullfinch
- Barbary Partridge
- Bar-bellied Cuckooshrike
- Bar-bellied Pitta
- Bar-bellied Woodcreeper
- Bar-bellied Woodpecker
- Bar-breasted Firefinch
- Bar-breasted Honeyeater
- Bar-breasted Piculet
- Barbuda Warbler
- Bar-crested Antshrike
- Bare-cheeked Babbler
- Bare-cheeked Trogon
- Bare-crowned Antbird
- Bare-eyed Antbird
- Bare-eyed Myna
- Bare-eyed Pigeon
- Bare-eyed Rail
- Bare-eyed Thrush
- Bare-eyed White-eye
- Bare-faced Bulbul
- Bare-faced Curassow
- Bare-faced Go-away-bird
- Bare-faced Ground Dove
- Bare-faced Ibis
- Bare-headed Laughingthrush
- Bare-legged Owl
- Bare-legged Swiftlet
- Bare-necked Fruitcrow
- Bare-necked Umbrellabird
- Bare-shanked Screech Owl
- Bare-throated Bellbird
- Bare-throated Tiger Heron
- Bare-throated Whistler
- Bar-headed Goose
- Barka Indigobird
- Barking Imperial Pigeon
- Barking Owl
- Barlow's Lark
- Barn Swallow
- Barnacle Goose
- Barolo Shearwater
- Barratt's Warbler
- Barred Antshrike
- Barred Antthrush
- Barred Becard
- Barred Buttonquail
- Barred Cuckoo-Dove
- Barred Cuckooshrike
- Barred Dove
- Barred Eagle-Owl
- Barred Forest Falcon
- Barred Fruiteater
- Barred Hawk
- Barred Honey Buzzard
- Barred Honeyeater
- Barred Laughingthrush
- Barred Long-tailed Cuckoo
- Barred Owl
- Barred Owlet-nightjar
- Barred Parakeet
- Barred Puffbird
- Barred Rail
- Barred Tinamou
- Barred Warbler
- Barred Wren-Warbler
- Barrow's Goldeneye
- Bar-shouldered Dove
- Bar-tailed Cuckoo-Dove
- Bar-tailed Godwit
- Bar-tailed Lark
- Bar-tailed Treecreeper
- Bar-tailed Trogon
- Bar-throated Apalis
- Bar-throated Minla
- Bartlett's Tinamou
- Barusan Cuckoo-Dove
- Bar-winged Flycatcher-shrike
- Bar-winged Oriole
- Bar-winged Prinia
- Bar-winged Rail
- Bar-winged Weaver
- Bar-winged Wood Wren
- Bar-winged Wren-Babbler
- Basra Reed Warbler
- Bassian Thrush
- Bat Falcon
- Bat Hawk
- Bateleur
- Bates's Nightjar
- Bates's Paradise Flycatcher
- Bates's Sunbird
- Bates's Swift
- Bates's Weaver
- Baudin's Black Cockatoo
- Baudo Guan
- Baudo Oropendola
- Baumann's Olive Greenbul
- Bay Antpitta
- Bay Coucal
- Bay Hornero
- Bay Woodpecker
- Bay Wren
- Baya Weaver
- Bay-backed Shrike
- Bay-breasted Cuckoo
- Bay-breasted Warbler
- Bay-capped Wren-Spinetail
- Bay-chested Warbling Finch
- Bay-crowned Brushfinch
- Bay-headed Tanager
- Bay-ringed Tyrannulet
- Bay-vented Cotinga
- Beach Kingfisher
- Beach Stone-curlew
- Bearded Barbet
- Bearded Bellbird
- Bearded Guan
- Bearded Mountaineer
- Bearded Reedling
- Bearded Screech Owl
- Bearded Scrub Robin
- Bearded Tachuri
- Bearded Vulture
- Bearded Wood Partridge
- Bearded Woodpecker
- Beaudouin's Snake Eagle
- Beautiful Firetail
- Beautiful Fruit Dove
- Beautiful Jay
- Beautiful Nuthatch
- Beautiful Sheartail
- Beautiful Sibia
- Beautiful Sunbird
- Beautiful Treerunner
- Beautiful Woodpecker
- Beck's Petrel
- Bedford's Paradise Flycatcher
- Bee Hummingbird
- Beesley's Lark
- Beijing Babbler
- Belcher's Gull
- Belding's Yellowthroat
- Belford's Melidectes
- Bell Miner
- Bell's Sparrow
- Bell's Vireo
- Belted Flycatcher
- Belted Kingfisher
- Bendire's Thrasher
- Bengal Bush Lark
- Bengal Florican
- Benguela Long-billed Lark
- Benguet Bush Warbler
- Bennett's Woodpecker
- Berlepsch's Canastero
- Berlepsch's Tinamou
- Bermuda Flicker
- Bermuda Hawk
- Bermuda Night Heron
- Bermuda Petrel
- Bermuda Saw-whet Owl
- Bermuda Towhee
- Bernier's Teal
- Bernier's Vanga
- Berthelot's Pipit
- Bertoni's Antbird
- Bertram's Weaver
- Berylline Hummingbird
- Beryl-spangled Tanager
- Besra
- Bewick's Wren
- Bhutan Laughingthrush
- Biak Black Flycatcher
- Biak Coucal
- Biak Gerygone
- Biak Leaf Warbler
- Biak Lorikeet
- Biak Monarch
- Biak Paradise Kingfisher
- Biak Scops Owl
- Biak Scrubfowl
- Biak Whistler
- Biak White-eye
- Bianchi's Warbler
- Bicknell's Thrush
- Bicol Ground Warbler
- Bicolored Antbird
- Bicolored Antpitta
- Bicolored Antvireo
- Bicolored Conebill
- Bicolored Flowerpecker
- Bicolored Hawk
- Bicolored Scrubwren
- Bicolored Wren
- Biddulph's Ground Jay
- Bimaculated Lark
- Biscutate Swift
- Bishop's Oo
- Bismarck Black Myzomela
- Bismarck Crow
- Bismarck Fantail
- Bismarck Hanging Parrot
- Bismarck Kingfisher
- Bismarck Pitta
- Bismarck Whistler
- Bismarck White-eye
- Black Antbird
- Black Antshrike
- Black Baza
- Black Bee-eater
- Black Berrypecker
- Black Bishop
- Black Bittern
- Black Boubou
- Black Bulbul
- Black Bushbird
- Black Butcherbird
- Black Caracara
- Black Catbird
- Black Cicadabird
- Black Coucal
- Black Crake
- Black Crowned Crane
- Black Cuckoo
- Black Cuckoo-Dove
- Black Cuckooshrike
- Black Curassow
- Black Currawong
- Black Drongo
- Black Dwarf Hornbill
- Black Eagle
- Black Falcon
- Black Fantail
- Black Flowerpiercer
- Black Francolin
- Black Grasswren
- Black Grouse
- Black Guan
- Black Guillemot
- Black Guineafowl
- Black Harrier
- Black Hawk-Eagle
- Black Heron
- Black Honey Buzzard
- Black Honeyeater
- Black Hornbill
- Black Imperial Pigeon
- Black Inca
- Black Jacobin
- Black Kite
- Black Lark
- Black Laughingthrush
- Black Lory
- Black Magpie
- Black Mamo
- Black Manakin
- Black Mannikin
- Black Metaltail
- Black Monarch
- Black Noddy
- Black Nunbird
- Black Oriole
- Black Oropendola
- Black Oystercatcher
- Black Partridge
- Black Petrel
- Black Phoebe
- Black Pitohui
- Black Rail
- Black Redstart
- Black Robin
- Black Rosy Finch
- Black Saw-wing
- Black Scimitarbill
- Black Scoter
- Black Scrub Robin
- Black Shama
- Black Sicklebill
- Black Siskin
- Black Sittella
- Black Skimmer
- Black Solitaire
- Black Sparrowhawk
- Black Spinetail
- Black Stilt
- Black Stork
- Black Storm Petrel
- Black Sunbird
- Black Swan
- Black Tern
- Black Thicket Fantail
- Black Thrush
- Black Tinamou
- Black Turnstone
- Black Vulture
- Black Wheatear
- Black Woodpecker
- Black-and-buff Woodpecker
- Black-and-chestnut Eagle
- Black-and-chestnut Warbling Finch
- Black-and-cinnamon Fantail
- Black-and-crimson Oriole
- Black-and-gold Cotinga
- Black-and-gold Tanager
- Black-and-orange Flycatcher
- Black-and-red Broadbill
- Black-and-rufous Swallow
- Black-and-rufous Warbling Finch
- Black-and-tawny Seedeater
- Black-and-white Antbird
- Black-and-white Becard
- Black-and-white Bulbul
- Black-and-white Hawk-Eagle
- Black-and-white Mannikin
- Black-and-white Monjita
- Black-and-white Owl
- Black-and-white Seedeater
- Black-and-white Shrike-flycatcher
- Black-and-white Tanager
- Black-and-white Tody-Flycatcher
- Black-and-white Triller
- Black-and-white Warbler
- Black-and-white-casqued Hornbill
- Black-and-yellow Broadbill
- Black-and-yellow Grosbeak
- Black-and-yellow Phainoptila
- Black-and-yellow Tanager
- Black-backed Antshrike
- Black-backed Barbet
- Black-backed Bittern
- Black-backed Bush Tanager
- Black-backed Butcherbird
- Black-backed Cisticola
- Black-backed Forktail
- Black-backed Grosbeak
- Black-backed Oriole
- Black-backed Puffback
- Black-backed Swamphen
- Black-backed Tanager
- Black-backed Thornbill
- Black-backed Thrush
- Black-backed Tody-Flycatcher
- Black-backed Water Tyrant
- Black-backed Woodpecker
- Black-banded Barbet
- Black-banded Crake
- Black-banded Flycatcher
- Black-banded Fruit Dove
- Black-banded Owl
- Black-banded Woodcreeper
- Black-bellied Antwren
- Black-bellied Bustard
- Black-bellied Cuckoo
- Black-bellied Cuckooshrike
- Black-bellied Firefinch
- Black-bellied Gnateater
- Black-bellied Hummingbird
- Black-bellied Malkoha
- Black-bellied Myzomela
- Black-bellied Sandgrouse
- Black-bellied Seedcracker
- Black-bellied Seedeater
- Black-bellied Starling
- Black-bellied Storm Petrel
- Black-bellied Sunbird
- Black-bellied Tern
- Black-bellied Thorntail
- Black-bellied Whistling Duck
- Black-bellied Wren
- Black-belted Flowerpecker
- Black-bibbed Cicadabird
- Black-bibbed Monarch
- Black-bibbed Tit
- Black-billed Amazon
- Black-billed Barbet
- Black-billed Brushturkey
- Black-billed Capercaillie
- Black-billed Coucal
- Black-billed Cuckoo
- Black-billed Flycatcher
- Black-billed Gull
- Black-billed Koel
- Black-billed Magpie
- Black-billed Mountain Toucan
- Black-billed Nightingale-Thrush
- Black-billed Peppershrike
- Black-billed Scythebill
- Black-billed Seed Finch
- Black-billed Shrike-Tyrant
- Black-billed Sicklebill
- Black-billed Streamertail
- Black-billed Thrush
- Black-billed Treehunter
- Black-billed Turaco
- Black-billed Weaver
- Black-billed Wood Dove
- Black-billed Wood Hoopoe
- Black-bodied Woodpecker
- Black-breasted Barbet
- Black-breasted Boatbill
- Black-breasted Buttonquail
- Black-breasted Buzzard
- Black-breasted Hillstar
- Black-breasted Mannikin
- Black-breasted Myzomela
- Black-breasted Parrotbill
- Black-breasted Puffbird
- Black-breasted Puffleg
- Black-breasted Thrush
- Black-breasted Weaver
- Black-breasted Wood Quail
- Black-browed Albatross
- Black-browed Babbler
- Black-browed Barbet
- Black-browed Bushtit
- Black-browed Fulvetta
- Black-browed Greenbul
- Black-browed Reed Warbler
- Black-browed Triller
- Blackburnian Warbler
- Blackcap Babbler
- Blackcap Illadopsis
- Black-capped Antwren
- Black-capped Apalis
- Black-capped Babbler
- Black-capped Becard
- Black-capped Bulbul
- Black-capped Catbird
- Black-capped Chickadee
- Black-capped Donacobius
- Black-capped Flycatcher
- Black-capped Foliage-gleaner
- Black-capped Gnatcatcher
- Black-capped Hemispingus
- Black-capped Kingfisher
- Black-capped Lory
- Black-capped Paradise Kingfisher
- Black-capped Parakeet
- Black-capped Petrel
- Black-capped Piprites
- Black-capped Pygmy Tyrant
- Black-capped Screech Owl
- Black-capped Siskin
- Black-capped Social Weaver
- Black-capped Sparrow
- Black-capped Speirops
- Black-capped Swallow
- Black-capped Tanager
- Black-capped Tinamou
- Black-capped Tyrannulet
- Black-capped Vireo
- Black-capped Warbling Finch
- Black-capped White-eye
- Black-capped Woodland Warbler
- Black-casqued Hornbill
- Black-cheeked Ant Tanager
- Black-cheeked Gnateater
- Black-cheeked Lovebird
- Black-cheeked Warbler
- Black-cheeked Waxbill
- Black-cheeked Woodpecker
- Black-chested Buzzard-Eagle
- Black-chested Fruiteater
- Black-chested Jay
- Black-chested Mountain Tanager
- Black-chested Prinia
- Black-chested Snake Eagle
- Black-chested Sparrow
- Black-chested Tyrant
- Black-chinned Antbird
- Black-chinned Babbler
- Black-chinned Fruit Dove
- Black-chinned Honeyeater
- Black-chinned Hummingbird
- Black-chinned Monarch
- Black-chinned Mountain Tanager
- Black-chinned Robin
- Black-chinned Siskin
- Black-chinned Sparrow
- Black-chinned Weaver
- Black-chinned Whistler
- Black-chinned Yuhina
- Black-collared Apalis
- Black-collared Barbet
- Black-collared Bulbul
- Black-collared Hawk
- Black-collared Jay
- Black-collared Lovebird
- Black-collared Starling
- Black-collared Swallow
- Black-cowled Oriole
- Black-cowled Saltator
- Black-crested Antshrike
- Black-crested Bulbul
- Black-crested Coquette
- Black-crested Finch
- Black-crested Titmouse
- Black-crested Tit-Tyrant
- Black-crested Warbler
- Black-crowned Antpitta
- Black-crowned Antshrike
- Black-crowned Babbler
- Black-crowned Barwing
- Black-crowned Fulvetta
- Black-crowned Monjita
- Black-crowned Night Heron
- Black-crowned Pitta
- Black-crowned Sparrow-Lark
- Black-crowned Tanager
- Black-crowned Tchagra
- Black-crowned Tityra
- Black-crowned Waxbill
- Black-crowned White-eye
- Black-dotted Piculet
- Black-eared Catbird
- Black-eared Cuckoo
- Black-eared Fairy
- Black-eared Ground Thrush
- Black-eared Hemispingus
- Black-eared Miner
- Black-eared Oriole
- Black-eared Seedeater
- Black-eared Shrike-babbler
- Black-eared Sparrow-Lark
- Black-eared Warbler
- Black-eared Wood Quail
- Black-faced Antbird
- Black-faced Antthrush
- Black-faced Babbler
- Black-faced Bunting
- Black-faced Canary
- Black-faced Cormorant
- Black-faced Cotinga
- Black-faced Coucal
- Black-faced Cuckooshrike
- Black-faced Dacnis
- Black-faced Firefinch
- Black-faced Friarbird
- Black-faced Grassquit
- Black-faced Grosbeak
- Black-faced Hawk
- Black-faced Ibis
- Black-faced Laughingthrush
- Black-faced Monarch
- Black-faced Munia
- Black-faced Pitta
- Black-faced Prinia
- Black-faced Rufous Warbler
- Black-faced Sandgrouse
- Black-faced Sheathbill
- Black-faced Solitaire
- Black-faced Spoonbill
- Black-faced Tanager
- Black-faced Warbler
- Black-faced Waxbill
- Black-faced Woodswallow
- Black-footed Albatross
- Black-fronted Brushfinch
- Black-fronted Bushshrike
- Black-fronted Dotterel
- Black-fronted Flowerpecker
- Black-fronted Ground Tyrant
- Black-fronted Nunbird
- Black-fronted Parakeet
- Black-fronted Piping Guan
- Black-fronted Spurfowl
- Black-fronted Tern
- Black-fronted Tyrannulet
- Black-fronted White-eye
- Black-fronted Wood Quail
- Black-girdled Barbet
- Black-goggled Tanager
- Black-headed Antbird
- Black-headed Antthrush
- Black-headed Apalis
- Black-headed Bee-eater
- Black-headed Berryeater
- Black-headed Brushfinch
- Black-headed Bulbul
- Black-headed Bunting
- Black-headed Canary
- Black-headed Cuckooshrike
- Black-headed Duck
- Black-headed Gonolek
- Black-headed Greenfinch
- Black-headed Grosbeak
- Black-headed Gull
- Black-headed Hemispingus
- Black-headed Heron
- Black-headed Honeyeater
- Black-headed Ibis
- Black-headed Jay
- Black-headed Lapwing
- Black-headed Myzomela
- Black-headed Nightingale-Thrush
- Black-headed Oriole
- Black-headed Parrot
- Black-headed Parrotbill
- Black-headed Penduline Tit
- Black-headed Rufous Warbler
- Black-headed Saltator
- Black-headed Shrike-babbler
- Black-headed Sibia
- Black-headed Siskin
- Black-headed Tailorbird
- Black-headed Tanager
- Black-headed Tody-Flycatcher
- Black-headed Trogon
- Black-headed Waxbill
- Black-headed Weaver
- Black-headed Whistler
- Black-headed Woodpecker
- Black-hooded Antshrike
- Black-hooded Antwren
- Black-hooded Coucal
- Black-hooded Laughingthrush
- Black-hooded Oriole
- Black-hooded Sierra Finch
- Black-hooded Sunbeam
- Black-hooded Thrush
- Blackish Antbird
- Blackish Chat-Tyrant
- Blackish Cinclodes
- Blackish Cuckooshrike
- Blackish Nightjar
- Blackish Oystercatcher
- Blackish Pewee
- Blackish Rail
- Blackish Tapaculo
- Blackish-blue Seedeater
- Blackish-grey Antshrike
- Blackish-headed Spinetail
- Black-legged Dacnis
- Black-legged Kittiwake
- Black-legged Seriema
- Black-lored Babbler
- Black-lored Cisticola
- Black-lored Parrot
- Black-lored Waxbill
- Black-lored Yellowthroat
- Black-mantled Goshawk
- Black-masked Finch
- Black-naped Fruit Dove
- Black-naped Monarch
- Black-naped Oriole
- Black-naped Tern
- Black-necked Aracari
- Black-necked Crane
- Black-necked Eremomela
- Black-necked Grebe
- Black-necked Red Cotinga
- Black-necked Stilt
- Black-necked Stork
- Black-necked Swan
- Black-necked Wattle-eye
- Black-necked Weaver
- Black-necked Woodpecker
- Black-necklaced Honeyeater
- Black-necklaced Scimitar Babbler
- Black-nest Swiftlet
- Blackpoll Warbler
- Black-polled Yellowthroat
- Black-ringed White-eye
- Black-rumped Buttonquail
- Black-rumped Flameback
- Black-rumped Magpie
- Black-rumped Waxbill
- Black-shouldered Cicadabird
- Black-shouldered Kite
- Black-shouldered Nightjar
- Black-sided Flowerpecker
- Black-sided Robin
- Blacksmith Lapwing
- Blacksmith Thrush
- Black-spectacled Brushfinch
- Black-spotted Barbet
- Black-spotted Bare-eye
- Blackstart
- Black-streaked Puffbird
- Black-streaked Scimitar Babbler
- Black-striped Sparrow
- Black-striped Woodcreeper
- Black-tailed Antbird
- Black-tailed Cisticola
- Black-tailed Crake
- Black-tailed Gnatcatcher
- Black-tailed Godwit
- Black-tailed Gull
- Black-tailed Leaftosser
- Black-tailed Monarch
- Black-tailed Myiobius
- Black-tailed Nativehen
- Black-tailed Tityra
- Black-tailed Trainbearer
- Black-tailed Treecreeper
- Black-tailed Trogon
- Black-thighed Falconet
- Black-thighed Grosbeak
- Black-thighed Puffleg
- Blackthroat
- Black-throated Accentor
- Black-throated Antbird
- Black-throated Antshrike
- Black-throated Apalis
- Black-throated Babbler
- Black-throated Barbet
- Black-throated Blue Warbler
- Black-throated Brilliant
- Black-throated Bushtit
- Black-throated Canary
- Black-throated Coucal
- Black-throated Finch
- Black-throated Flowerpiercer
- Black-throated Green Warbler
- Black-throated Grey Warbler
- Black-throated Grosbeak
- Black-throated Hermit
- Black-throated Honeyeater
- Black-throated Huet-huet
- Black-throated Jay
- Black-throated Laughingthrush
- Black-throated Loon
- Black-throated Magpie-Jay
- Black-throated Mango
- Black-throated Munia
- Black-throated Parrotbill
- Black-throated Prinia
- Black-throated Robin
- Black-throated Saltator
- Black-throated Shrikebill
- Black-throated Shrike-Tanager
- Black-throated Sparrow
- Black-throated Spinetail
- Black-throated Sunbird
- Black-throated Thistletail
- Black-throated Thrush
- Black-throated Tody-Tyrant
- Black-throated Toucanet
- Black-throated Trogon
- Black-throated Wattle-eye
- Black-throated Whipbird
- Black-throated Wren
- Black-throated Wren-Babbler
- Black-tipped Cotinga
- Black-tipped Monarch
- Black-vented Oriole
- Black-vented Shearwater
- Black-whiskered Vireo
- Black-winged Cuckooshrike
- Black-winged Flycatcher-shrike
- Black-winged Ground Dove
- Black-winged Kite
- Black-winged Lapwing
- Black-winged Lory
- Black-winged Lovebird
- Black-winged Monarch
- Black-winged Oriole
- Black-winged Parrot
- Black-winged Petrel
- Black-winged Pratincole
- Black-winged Red Bishop
- Black-winged Saltator
- Black-winged Snowfinch
- Black-winged Starling
- Black-winged Stilt
- Blakiston's Fish Owl
- Blanford's Lark
- Blanford's Rosefinch
- Blanford's Snowfinch
- Blaze-winged Parakeet
- Blond-crested Woodpecker
- Blood Pheasant
- Blood-breasted Flowerpecker
- Blood-colored Woodpecker
- Blood-eared Parakeet
- Blossom-headed Parakeet
- Blue Bird-of-paradise
- Blue Bunting
- Blue Cotinga
- Blue Coua
- Blue Crane
- Blue Cuckooshrike
- Blue Dacnis
- Blue Duck
- Blue Eared Pheasant
- Blue Finch
- Blue Grosbeak
- Blue Ground Dove
- Blue Jay
- Blue Jewel-babbler
- Blue Korhaan
- Blue Lorikeet
- Blue Malkoha
- Blue Manakin
- Blue Mockingbird
- Blue Mountain Vireo
- Blue Noddy
- Blue Nuthatch
- Blue Paradise Flycatcher
- Blue Petrel
- Blue Pitta
- Blue Quail
- Blue Rock Thrush
- Blue Swallow
- Blue Vanga
- Blue Waxbill
- Blue Whistling Thrush
- Blue-and-black Tanager
- Blue-and-gold Tanager
- Blue-and-white Flycatcher
- Blue-and-white Kingfisher
- Blue-and-white Mockingbird
- Blue-and-white Swallow
- Blue-and-yellow Macaw
- Blue-and-yellow Tanager
- Blue-backed Conebill
- Blue-backed Manakin
- Blue-backed Parrot
- Blue-backed Tanager
- Blue-banded Kingfisher
- Blue-banded Pitta
- Blue-banded Toucanet
- Blue-bearded Bee-eater
- Blue-bearded Helmetcrest
- Blue-bellied Parrot
- Blue-bellied Roller
- Blue-billed Black Tyrant
- Blue-billed Curassow
- Blue-billed Duck
- Blue-billed Malimbe
- Blue-black Grassquit
- Blue-black Grosbeak
- Blue-black Kingfisher
- Blue-breasted Bee-eater
- Blue-breasted Blue Flycatcher
- Blue-breasted Fairywren
- Blue-breasted Kingfisher
- Blue-browed Tanager
- Blue-capped Cordon-bleu
- Blue-capped Fruit Dove
- Blue-capped Ifrit
- Blue-capped Motmot
- Blue-capped Puffleg
- Blue-capped Redstart
- Blue-capped Rock Thrush
- Blue-capped Tanager
- Blue-cheeked Amazon
- Blue-cheeked Bee-eater
- Blue-cheeked Flowerpecker
- Blue-chested Hummingbird
- Blue-chinned Sapphire
- Blue-collared Parrot
- Blue-crowned Chlorophonia
- Blue-crowned Hanging Parrot
- Blue-crowned Laughingthrush
- Blue-crowned Lorikeet
- Blue-crowned Manakin
- Blue-crowned Parakeet
- Blue-crowned Racket-tail
- Blue-crowned Trogon
- Blue-eared Barbet
- Blue-eared Kingfisher
- Blue-eared Lory
- Blue-eyed Cockatoo
- Blue-eyed Ground Dove
- Blue-faced Honeyeater
- Blue-faced Malkoha
- Blue-faced Parrotfinch
- Blue-faced Rail
- Blue-footed Booby
- Blue-fronted Blue Flycatcher
- Blue-fronted Lancebill
- Blue-fronted Lorikeet
- Blue-fronted Parrotlet
- Blue-fronted Redstart
- Blue-fronted Robin
- Blue-grey Gnatcatcher
- Blue-grey Tanager
- Blue-headed Bee-eater
- Blue-headed Coucal
- Blue-headed Crested Flycatcher
- Blue-headed Fantail
- Blue-headed Hummingbird
- Blue-headed Macaw
- Blue-headed Parrot
- Blue-headed Pitta
- Blue-headed Quail-Dove
- Blue-headed Racket-tail
- Blue-headed Sapphire
- Blue-headed Sunbird
- Blue-headed Vireo
- Blue-headed Wood Dove
- Blue-lored Antbird
- Blue-mantled Crested Flycatcher
- Blue-mantled Thornbill
- Blue-masked Leafbird
- Blue-moustached Bee-eater
- Blue-naped Chlorophonia
- Blue-naped Mousebird
- Blue-naped Parrot
- Blue-naped Pitta
- Blue-necked Jacamar
- Blue-necked Tanager
- Blue-rumped Manakin
- Blue-rumped Parrot
- Blue-rumped Pitta
- Blue-shouldered Robin-Chat
- Blue-spotted Wood Dove
- Blue-streaked Lory
- Blue-tailed Bee-eater
- Blue-tailed Emerald
- Blue-tailed Hummingbird
- Bluethroat
- Blue-throated Barbet
- Blue-throated Bee-eater
- Blue-throated Blue Flycatcher
- Blue-throated Brown Sunbird
- Blue-throated Hillstar
- Blue-throated Macaw
- Blue-throated Motmot
- Blue-throated Mountaingem
- Blue-throated Piping Guan
- Blue-throated Roller
- Blue-throated Sapphire
- Blue-throated Starfrontlet
- Blue-throated Toucanet
- Blue-tufted Starthroat
- Blue-vented Hummingbird
- Blue-wattled Bulbul
- Blue-whiskered Tanager
- Blue-winged Goose
- Blue-winged Kookaburra
- Blue-winged Laughingthrush
- Blue-winged Leafbird
- Blue-winged Macaw
- Blue-winged Minla
- Blue-winged Mountain Tanager
- Blue-winged Parakeet
- Blue-winged Parrot
- Blue-winged Parrotlet
- Blue-winged Pitta
- Blue-winged Racket-tail
- Blue-winged Teal
- Blue-winged Warbler
- Bluish Flowerpiercer
- Bluish-fronted Jacamar
- Bluish-slate Antshrike
- Blunt-winged Warbler
- Blyth's Frogmouth
- Blyth's Hawk-Eagle
- Blyth's Hornbill
- Blyth's Kingfisher
- Blyth's Leaf Warbler
- Blyth's Paradise Flycatcher
- Blyth's Pipit
- Blyth's Reed Warbler
- Blyth's Rosefinch
- Blyth's Shrike-babbler
- Blyth's Swift
- Blyth's Tragopan
- Boa Nova Tapaculo
- Boat-billed Flycatcher
- Boat-billed Heron
- Boat-billed Tody-Tyrant
- Boat-tailed Grackle
- Bobolink
- Bob-tailed Weaver
- Bocage's Akalat
- Bocage's Bushshrike
- Bocage's Sunbird
- Bocage's Weaver
- Bogota Rail
- Bohemian Waxwing
- Böhm's Bee-eater
- Böhm's Flycatcher
- Böhm's Spinetail
- Bohol Sunbird
- Bokikokiko
- Bokmakierie
- Bold-striped Tit-Babbler
- Bolivian Blackbird
- Bolivian Brushfinch
- Bolivian Earthcreeper
- Bolivian Recurvebill
- Bolivian Slaty Antshrike
- Bolivian Spinetail
- Bolivian Tyrannulet
- Bolivian Warbling Finch
- Bolivian White-crowned Tapaculo
- Bolle's Pigeon
- Bonaparte's Gull
- Bonaparte's Nightjar
- Bonaparte's Parakeet
- Bonelli's Eagle
- Bonin Grosbeak
- Bonin Petrel
- Bonin Thrush
- Bonin White-eye
- Bonin Wood Pigeon
- Booted Eagle
- Booted Warbler
- Boran Cisticola
- Boreal Chickadee
- Boreal Owl
- Bornean Banded Pitta
- Bornean Barbet
- Bornean Blue Flycatcher
- Bornean Bristlehead
- Bornean Bulbul
- Bornean Forktail
- Bornean Frogmouth
- Bornean Green Magpie
- Bornean Ground Cuckoo
- Bornean Leafbird
- Bornean Peacock-Pheasant
- Bornean Spiderhunter
- Bornean Stubtail
- Bornean Swiftlet
- Bornean Treepie
- Bornean Whistler
- Bornean Whistling Thrush
- Bornean Wren-Babbler
- Botha's Lark
- Botteri's Sparrow
- Boucard's Wren
- Bougainville Bush Warbler
- Bougainville Crow
- Bougainville Honeyeater
- Bougainville Monarch
- Bougainville Thicketbird
- Bougainville Whistler
- Boulder Chat
- Bounty Shag
- Bourke's Parrot
- Bower's Shrikethrush
- Boyd's Shearwater
- Boyer's Cuckooshrike
- Brace's Emerald
- Bradfield's Hornbill
- Bradfield's Swift
- Brahminy Kite
- Brahminy Starling
- Brambling
- Bran-colored Flycatcher
- Brandt's Cormorant
- Brandt's Mountain Finch
- Brant Goose
- Brasilia Tapaculo
- Brass's Friarbird
- Brassy-breasted Tanager
- Braun's Bushshrike
- Brazilian Laniisoma
- Brazilian Merganser
- Brazilian Ruby
- Brazilian Tanager
- Brazilian Teal
- Brazilian Tinamou
- Brazza's Martin
- Brehm's Tiger Parrot
- Brewer's Blackbird
- Brewer's Sparrow
- Bridled Honeyeater
- Bridled Quail-Dove
- Bridled Sparrow
- Bridled Tern
- Bridled Titmouse
- Bridled White-eye
- Bright-rumped Attila
- Bright-rumped Yellow Finch
- Brigida's Woodcreeper
- Brimstone Canary
- Bristle-crowned Starling
- Bristled Grassbird
- Bristle-nosed Barbet
- Bristle-thighed Curlew
- Broad-billed Fairywren
- Broad-billed Flycatcher
- Broad-billed Hummingbird
- Broad-billed Motmot
- Broad-billed Parrot
- Broad-billed Prion
- Broad-billed Roller
- Broad-billed Sandpiper
- Broad-billed Tody
- Broad-billed Warbler
- Broad-ringed White-eye
- Broad-tailed Grassbird
- Broad-tailed Hummingbird
- Broad-tailed Paradise Whydah
- Broad-tipped Hermit
- Broad-winged Hawk
- Brolga
- Bronze Ground Dove
- Bronze Mannikin
- Bronze Parotia
- Bronze-brown Cowbird
- Bronzed Cowbird
- Bronzed Drongo
- Bronze-green Euphonia
- Bronze-olive Pygmy Tyrant
- Bronze-tailed Comet
- Bronze-tailed Peacock-Pheasant
- Bronze-tailed Plumeleteer
- Bronze-tailed Starling
- Bronze-tailed Thornbill
- Bronze-winged Courser
- Bronze-winged Duck
- Bronze-winged Jacana
- Bronze-winged Parrot
- Bronze-winged Woodpecker
- Bronzy Hermit
- Bronzy Inca
- Bronzy Jacamar
- Bronzy Sunbird
- Brooks's Leaf Warbler
- Brown Accentor
- Brown Babbler
- Brown Barbet
- Brown Booby
- Brown Bullfinch
- Brown Bush Warbler
- Brown Cacholote
- Brown Crake
- Brown Creeper
- Brown Cuckoo-Dove
- Brown Dipper
- Brown Eared Pheasant
- Brown Emutail
- Brown Falcon
- Brown Fantail
- Brown Firefinch
- Brown Fish Owl
- Brown Fulvetta
- Brown Gerygone
- Brown Goshawk
- Brown Hawk-Owl
- Brown Honeyeater
- Brown Illadopsis
- Brown Inca
- Brown Jacamar
- Brown Jay
- Brown Lory
- Brown Mesite
- Brown Nightjar
- Brown Noddy
- Brown Nunlet
- Brown Oriole
- Brown Parisoma
- Brown Parrotbill
- Brown Pelican
- Brown Quail
- Brown Rock Chat
- Brown Scrub Robin
- Brown Shrike
- Brown Sicklebill
- Brown Skua
- Brown Snake Eagle
- Brown Songlark
- Brown Tanager
- Brown Teal
- Brown Thornbill
- Brown Thrasher
- Brown Tinamou
- Brown Tit-Babbler
- Brown Treecreeper
- Brown Trembler
- Brown Twinspot
- Brown Violetear
- Brown Wood Owl
- Brown Wood Rail
- Brown Woodland Warbler
- Brown-and-yellow Marshbird
- Brown-backed Chat-Tyrant
- Brown-backed Flowerpecker
- Brown-backed Honeybird
- Brown-backed Honeyeater
- Brown-backed Mockingbird
- Brown-backed Needletail
- Brown-backed Parrotlet
- Brown-backed Scrub Robin
- Brown-backed Solitaire
- Brown-backed Whistler
- Brown-backed Woodpecker
- Brown-banded Antpitta
- Brown-banded Puffbird
- Brown-banded Rail
- Brown-bellied Stipplethroat
- Brown-bellied Swallow
- Brown-billed Scythebill
- Brown-breasted Bamboo Tyrant
- Brown-breasted Barbet
- Brown-breasted Bulbul
- Brown-breasted Flycatcher
- Brown-breasted Gerygone
- Brown-capped Babbler
- Brown-capped Fantail
- Brown-capped Laughingthrush
- Brown-capped Pygmy Woodpecker
- Brown-capped Rosy Finch
- Brown-capped Tit-Spinetail
- Brown-capped Tyrannulet
- Brown-capped Vireo
- Brown-capped Weaver
- Brown-capped Whitestart
- Brown-cheeked Bulbul
- Brown-cheeked Fulvetta
- Brown-cheeked Hornbill
- Brown-cheeked Laughingthrush
- Brown-cheeked Rail
- Brown-chested Alethe
- Brown-chested Barbet
- Brown-chested Jungle Flycatcher
- Brown-chested Lapwing
- Brown-chested Martin
- Brown-crested Flycatcher
- Brown-crowned Tchagra
- Brown-eared Bulbul
- Brown-eared Woodpecker
- Brown-flanked Bush Warbler
- Brown-flanked Tanager
- Brown-fronted Woodpecker
- Brown-headed Apalis
- Brown-headed Barbet
- Brown-headed Cowbird
- Brown-headed Crow
- Brown-headed Greenlet
- Brown-headed Gull
- Brown-headed Honeyeater
- Brown-headed Jewel-babbler
- Brown-headed Nuthatch
- Brown-headed Paradise Kingfisher
- Brown-headed Parrot
- Brown-headed Thrush
- Brown-hooded Gull
- Brown-hooded Kingfisher
- Brown-hooded Parrot
- Brownish Elaenia
- Brownish Twistwing
- Brownish-headed Antbird
- Brown-mandibled Aracari
- Brown-necked Parrot
- Brown-necked Raven
- Brown-rumped Bunting
- Brown-rumped Foliage-gleaner
- Brown-rumped Seedeater
- Brown-rumped Tapaculo
- Brown-streaked Flycatcher
- Brown-tailed Rock Chat
- Brown-throated Barbet
- Brown-throated Fulvetta
- Brown-throated Martin
- Brown-throated Parakeet
- Brown-throated Sunbird
- Brown-throated Wattle-eye
- Brown-winged Kingfisher
- Brown-winged Parrotbill
- Brown-winged Schiffornis
- Brown-winged Starling
- Brown-winged Whistling Thrush
- Brubru
- Bruce's Green Pigeon
- Brush Bronzewing
- Brush Cuckoo
- Brushland Tinamou
- Bryan's Shearwater
- Bubbling Cisticola
- Buckley's Forest Falcon
- Budgerigar
- Buff-banded Rail
- Buff-banded Thicketbird
- Buff-banded Tyrannulet
- Buff-barred Warbler
- Buff-bellied Hermit
- Buff-bellied Hummingbird
- Buff-bellied Mannikin
- Buff-bellied Monarch
- Buff-bellied Pipit
- Buff-bellied Puffbird
- Buff-bellied Tanager
- Buff-bellied Warbler
- Buff-breasted Babbler
- Buff-breasted Buttonquail
- Buff-breasted Earthcreeper
- Buff-breasted Flycatcher
- Buff-breasted Mountain Tanager
- Buff-breasted Paradise Kingfisher
- Buff-breasted Sabrewing
- Buff-breasted Sandpiper
- Buff-breasted Tody-Tyrant
- Buff-breasted Wren
- Buff-bridled Inca Finch
- Buff-browed Chachalaca
- Buff-browed Foliage-gleaner
- Buff-cheeked Greenlet
- Buff-cheeked Tody-Flycatcher
- Buff-chested Babbler
- Buff-collared Nightjar
- Buff-crested Bustard
- Buff-faced Pygmy Parrot
- Buff-faced Scrubwren
- Buff-fronted Foliage-gleaner
- Buff-fronted Owl
- Buff-fronted Quail-Dove
- Buff-headed Coucal
- Bufflehead
- Buff-necked Ibis
- Buff-necked Woodpecker
- Buff-rumped Thornbill
- Buff-rumped Warbler
- Buff-rumped Woodpecker
- Buff-sided Robin
- Buff-spotted Flameback
- Buff-spotted Flufftail
- Buff-spotted Woodpecker
- Buff-streaked Chat
- Buff-tailed Coronet
- Buff-tailed Sicklebill
- Buff-thighed Puffleg
- Buff-throated Apalis
- Buff-throated Foliage-gleaner
- Buff-throated Purpletuft
- Buff-throated Saltator
- Buff-throated Sunbird
- Buff-throated Tody-Tyrant
- Buff-throated Warbler
- Buff-throated Warbling Finch
- Buff-throated Woodcreeper
- Buff-vented Bulbul
- Buff-winged Cinclodes
- Buff-winged Starfrontlet
- Buffy Fish Owl
- Buffy Helmetcrest
- Buffy Hummingbird
- Buffy Laughingthrush
- Buffy Pipit
- Buffy Tuftedcheek
- Buffy-crowned Wood Partridge
- Buffy-fronted Seedeater
- Bugun Liocichla
- Bukidnon Woodcock
- Buller's Albatross
- Buller's Shearwater
- Bull-headed Shrike
- Bullock's Oriole
- Bulwer's Petrel
- Bulwer's Pheasant
- Bumblebee Hummingbird
- Bundok Flycatcher
- Burchell's Coucal
- Burchell's Courser
- Burchell's Sandgrouse
- Burchell's Starling
- Burmese Bush Lark
- Burmese Bushtit
- Burmese Nuthatch
- Burmese Prinia
- Burmese Shrike
- Burmese Yuhina
- Burnished-buff Tanager
- Burnt-necked Eremomela
- Burrowing Owl
- Burrowing Parrot
- Buru Boobook
- Buru Bush Warbler
- Buru Cuckooshrike
- Buru Dwarf Kingfisher
- Buru Golden Bulbul
- Buru Green Pigeon
- Buru Honeyeater
- Buru Mountain Pigeon
- Buru Racket-tail
- Buru Thrush
- Buru White-eye
- Bush Blackcap
- Bush Stone-curlew
- Bushveld Pipit
- Bushwren
- Bushy-crested Hornbill
- Bushy-crested Jay
- Butterfly Coquette
- Buzzing Flowerpecker
- Caatinga Antwren
- Caatinga Cacholote
- Caatinga Parakeet
- Caatinga Puffbird
- Cabanis's Bunting
- Cabanis's Greenbul
- Cabanis's Ground Sparrow
- Cabanis's Seedeater
- Cabanis's Spinetail
- Cabanis's Wren
- Cabot's Tern
- Cabot's Tragopan
- Cachar Bulbul
- Cachar Wedge-billed Babbler
- Cackling Goose
- Cactus Canastero
- Cactus Wren
- Caica Parrot
- Calandra Lark
- Calayan Rail
- California Condor
- California Gnatcatcher
- California Gull
- California Quail
- California Scrub Jay
- California Thrasher
- California Towhee
- Calliope Hummingbird
- Cambodian Laughingthrush
- Cambodian Tailorbird
- Cameroon Greenbul
- Cameroon Indigobird
- Cameroon Olive Greenbul
- Cameroon Olive Pigeon
- Cameroon Sunbird
- Camiguin Hanging Parrot
- Camiguin Hawk-Owl
- Campbell Albatross
- Campbell Shag
- Campbell Teal
- Campbell's Fairywren
- Campina Thrush
- Campo Flicker
- Campo Miner
- Campo Troupial
- Canada Goose
- Canada Jay
- Canada Warbler
- Canary Flyrobin
- Canary Islands Chiffchaff
- Canary Islands Oystercatcher
- Canary Islands Stonechat
- Canary White-eye
- Canebrake Groundcreeper
- Canebrake Wren
- Canivet's Emerald
- Canvasback
- Canyon Canastero
- Canyon Towhee
- Canyon Wren
- Cape Barren Goose
- Cape Batis
- Cape Bulbul
- Cape Bunting
- Cape Canary
- Cape Clapper Lark
- Cape Cormorant
- Cape Crow
- Cape Eagle-Owl
- Cape Gannet
- Cape Grassbird
- Cape Long-billed Lark
- Cape Longclaw
- Cape May Warbler
- Cape Parrot
- Cape Penduline Tit
- Cape Petrel
- Cape Robin-Chat
- Cape Rock Thrush
- Cape Rockjumper
- Cape Shoveler
- Cape Siskin
- Cape Sparrow
- Cape Spurfowl
- Cape Starling
- Cape Sugarbird
- Cape Teal
- Cape Verde Buzzard
- Cape Verde Shearwater
- Cape Verde Storm Petrel
- Cape Verde Swift
- Cape Verde Warbler
- Cape Vulture
- Cape Wagtail
- Cape Weaver
- Cape White-eye
- Capped Conebill
- Capped Heron
- Capped Wheatear
- Capped White-eye
- Capuchin Babbler
- Capuchinbird
- Caqueta Seedeater
- Caracas Brushfinch
- Caracas Tapaculo
- Carbonated Sierra Finch
- Cardinal Lory
- Cardinal Myzomela
- Cardinal Quelea
- Cardinal Woodpecker
- Carib Grackle
- Caribbean Dove
- Caribbean Elaenia
- Caribbean Hornero
- Caribbean Martin
- Carmelite Sunbird
- Carmiol's Tanager
- Carnaby's Black Cockatoo
- Carolina Chickadee
- Carolina Parakeet
- Carolina Wren
- Carolinian Reed Warbler
- Carpentarian Grasswren
- Carp's Tit
- Carrion Crow
- Carrizal Seedeater
- Carruthers's Cisticola
- Carunculated Caracara
- Carunculated Fruit Dove
- Caspian Gull
- Caspian Plover
- Caspian Snowcock
- Caspian Tern
- Caspian Tit
- Casqued Oropendola
- Cassia Crossbill
- Cassin's Auklet
- Cassin's Finch
- Cassin's Flycatcher
- Cassin's Hawk-Eagle
- Cassin's Honeybird
- Cassin's Kingbird
- Cassin's Malimbe
- Cassin's Sparrow
- Cassin's Spinetail
- Cassin's Vireo
- Castelnau's Antshrike
- Cattle Tyrant
- Cauca Guan
- Caucasian Grouse
- Caucasian Snowcock
- Caura Antbird
- Cave Swallow
- Cave Swiftlet
- Cayenne Jay
- Cayenne Nightjar
- Ceara Gnateater
- Ceara Woodcreeper
- Cebu Flowerpecker
- Cebu Hawk-Owl
- Cedar Waxwing
- Celestial Monarch
- Central American Pygmy Owl
- Cerulean Cuckooshrike
- Cerulean Kingfisher
- Cerulean Paradise Flycatcher
- Cerulean Warbler
- Cerulean-capped Manakin
- Cetti's Warbler
- Chabert Vanga
- Chaco Chachalaca
- Chaco Eagle
- Chaco Earthcreeper
- Chaco Owl
- Chaco Puffbird
- Chad Firefinch
- Chalk-browed Mockingbird
- Changeable Hawk-Eagle
- Channel-billed Cuckoo
- Channel-billed Toucan
- Chapada Flycatcher
- Chapin's Apalis
- Chapin's Babbler
- Chapin's Flycatcher
- Chaplin's Barbet
- Chapman's Antshrike
- Chapman's Bristle Tyrant
- Chapman's Swift
- Charlotte's Bulbul
- Charming Hummingbird
- Chat Flycatcher
- Chatham Albatross
- Chatham Bellbird
- Chatham Fernbird
- Chatham Gerygone
- Chatham Oystercatcher
- Chatham Parakeet
- Chatham Petrel
- Chatham Pigeon
- Chatham Rail
- Chatham Shag
- Chatham Snipe
- Chattering Cisticola
- Chattering Gnatwren
- Chattering Kingfisher
- Chattering Lory
- Checkered Woodpecker
- Checker-throated Stipplethroat
- Checker-throated Woodpecker
- Cheer Pheasant
- Cherrie's Antwren
- Cherry-throated Tanager
- Chestnut Antpitta
- Chestnut Bulbul
- Chestnut Bunting
- Chestnut Forest Rail
- Chestnut Munia
- Chestnut Piculet
- Chestnut Quail-thrush
- Chestnut Rail
- Chestnut Seedeater
- Chestnut Sparrow
- Chestnut Teal
- Chestnut Thrush
- Chestnut Wattle-eye
- Chestnut Weaver
- Chestnut Wood Quail
- Chestnut Woodpecker
- Chestnut-backed Antbird
- Chestnut-backed Antshrike
- Chestnut-backed Buttonquail
- Chestnut-backed Chickadee
- Chestnut-backed Jewel-babbler
- Chestnut-backed Laughingthrush
- Chestnut-backed Owlet
- Chestnut-backed Scimitar Babbler
- Chestnut-backed Sparrow-Lark
- Chestnut-backed Sparrow-Weaver
- Chestnut-backed Tanager
- Chestnut-backed Thornbird
- Chestnut-backed Thrush
- Chestnut-banded Plover
- Chestnut-bellied Cotinga
- Chestnut-bellied Cuckoo
- Chestnut-bellied Euphonia
- Chestnut-bellied Fantail
- Chestnut-bellied Flowerpiercer
- Chestnut-bellied Guan
- Chestnut-bellied Hummingbird
- Chestnut-bellied Imperial Pigeon
- Chestnut-bellied Malkoha
- Chestnut-bellied Monarch
- Chestnut-bellied Mountain Tanager
- Chestnut-bellied Nuthatch
- Chestnut-bellied Partridge
- Chestnut-bellied Rock Thrush
- Chestnut-bellied Sandgrouse
- Chestnut-bellied Seed Finch
- Chestnut-bellied Seedeater
- Chestnut-bellied Starling
- Chestnut-bellied Thrush
- Chestnut-bellied Tit
- Chestnut-belted Gnateater
- Chestnut-breasted Chlorophonia
- Chestnut-breasted Coronet
- Chestnut-breasted Cuckoo
- Chestnut-breasted Malkoha
- Chestnut-breasted Mannikin
- Chestnut-breasted Mountain Finch
- Chestnut-breasted Nigrita
- Chestnut-breasted Partridge
- Chestnut-breasted Quail-thrush
- Chestnut-breasted Whiteface
- Chestnut-breasted Wren
- Chestnut-capped Babbler
- Chestnut-capped Blackbird
- Chestnut-capped Brushfinch
- Chestnut-capped Flycatcher
- Chestnut-capped Laughingthrush
- Chestnut-capped Piha
- Chestnut-capped Puffbird
- Chestnut-capped Thrush
- Chestnut-cheeked Starling
- Chestnut-collared Longspur
- Chestnut-collared Swallow
- Chestnut-collared Swift
- Chestnut-colored Woodpecker
- Chestnut-crested Antbird
- Chestnut-crested Cotinga
- Chestnut-crested Yuhina
- Chestnut-crowned Antpitta
- Chestnut-crowned Babbler
- Chestnut-crowned Becard
- Chestnut-crowned Bush Warbler
- Chestnut-crowned Foliage-gleaner
- Chestnut-crowned Gnateater
- Chestnut-crowned Laughingthrush
- Chestnut-crowned Sparrow-Weaver
- Chestnut-crowned Warbler
- Chestnut-eared Aracari
- Chestnut-eared Bunting
- Chestnut-eared Laughingthrush
- Chestnut-faced Babbler
- Chestnut-flanked Sparrowhawk
- Chestnut-flanked White-eye
- Chestnut-fronted Helmetshrike
- Chestnut-fronted Macaw
- Chestnut-headed Bee-eater
- Chestnut-headed Chachalaca
- Chestnut-headed Crake
- Chestnut-headed Flufftail
- Chestnut-headed Nunlet
- Chestnut-headed Oropendola
- Chestnut-headed Partridge
- Chestnut-headed Sparrow-Lark
- Chestnut-headed Tanager
- Chestnut-headed Tesia
- Chestnut-hooded Laughingthrush
- Chestnut-naped Antpitta
- Chestnut-naped Forktail
- Chestnut-naped Spurfowl
- Chestnut-necklaced Partridge
- Chestnut-quilled Rock Pigeon
- Chestnut-rumped Babbler
- Chestnut-rumped Heathwren
- Chestnut-rumped Thornbill
- Chestnut-rumped Woodcreeper
- Chestnut-shouldered Antwren
- Chestnut-shouldered Goshawk
- Chestnut-sided Shrike-Vireo
- Chestnut-sided Warbler
- Chestnut-tailed Starling
- Chestnut-throated Apalis
- Chestnut-throated Flycatcher
- Chestnut-throated Huet-huet
- Chestnut-throated Seedeater
- Chestnut-throated Spinetail
- Chestnut-tipped Toucanet
- Chestnut-vented Conebill
- Chestnut-vented Nuthatch
- Chestnut-vented Warbler
- Chestnut-winged Babbler
- Chestnut-winged Chachalaca
- Chestnut-winged Cinclodes
- Chestnut-winged Cuckoo
- Chestnut-winged Foliage-gleaner
- Chestnut-winged Hookbill
- Chestnut-winged Starling
- Chico's Tyrannulet
- Chiguanco Thrush
- Chihuahuan Raven
- Chilean Elaenia
- Chilean Flamingo
- Chilean Flicker
- Chilean Hawk
- Chilean Mockingbird
- Chilean Pigeon
- Chilean Seaside Cinclodes
- Chilean Skua
- Chilean Swallow
- Chilean Tinamou
- Chilean Woodstar
- Chiloe Wigeon
- Chimango Caracara
- Chiming Wedgebill
- Chimney Swift
- Chin Hills Wren-Babbler
- Chinese Babax
- Chinese Bamboo Partridge
- Chinese Barbet
- Chinese Beautiful Rosefinch
- Chinese Blackbird
- Chinese Blue Flycatcher
- Chinese Bush Warbler
- Chinese Crested Tern
- Chinese Cupwing
- Chinese Egret
- Chinese Francolin
- Chinese Fulvetta
- Chinese Grassbird
- Chinese Grey Shrike
- Chinese Grosbeak
- Chinese Grouse
- Chinese Hwamei
- Chinese Leaf Warbler
- Chinese Monal
- Chinese Nuthatch
- Chinese Penduline Tit
- Chinese Pond Heron
- Chinese Rubythroat
- Chinese Shortwing
- Chinese Sparrowhawk
- Chinese Thrush
- Chinese White-browed Rosefinch
- Chinspot Batis
- Chinstrap Penguin
- Chipping Sparrow
- Chiribiquete Emerald
- Chirinda Apalis
- Chiriqui Foliage-gleaner
- Chiriqui Quail-Dove
- Chiriqui Yellowthroat
- Chirping Cisticola
- Chirruping Wedgebill
- Chivi Vireo
- Choco Brushfinch
- Choco Poorwill
- Choco Screech Owl
- Choco Sirystes
- Choco Tapaculo
- Choco Tinamou
- Choco Toucan
- Choco Trogon
- Choco Tyrannulet
- Choco Vireo
- Choco Warbler
- Choco Woodpecker
- Chocolate Boobook
- Chocolate-backed Kingfisher
- Chocolate-vented Tyrant
- Choiseul Pigeon
- Chopi Blackbird
- Chorister Robin-Chat
- Chotoy Spinetail
- Chowchilla
- Christmas Boobook
- Christmas Frigatebird
- Christmas Imperial Pigeon
- Christmas Island Swiftlet
- Christmas Shearwater
- Christmas White-eye
- Chubb's Cisticola
- Chubut Steamer Duck
- Chucao Tapaculo
- Chuck-will's-widow
- Chukar Partridge
- Churring Cisticola
- Chusquea Tapaculo
- Chuuk Monarch
- Cinderella Waxbill
- Cinereous Antshrike
- Cinereous Becard
- Cinereous Bulbul
- Cinereous Bunting
- Cinereous Conebill
- Cinereous Finch
- Cinereous Ground Tyrant
- Cinereous Harrier
- Cinereous Mourner
- Cinereous Owl
- Cinereous Tinamou
- Cinereous Tit
- Cinereous Tyrant
- Cinereous Vulture
- Cinereous Warbling Finch
- Cinereous-breasted Spinetail
- Cinnabar Boobook
- Cinnamon Attila
- Cinnamon Becard
- Cinnamon Bittern
- Cinnamon Bracken Warbler
- Cinnamon Flycatcher
- Cinnamon Ground Dove
- Cinnamon Hummingbird
- Cinnamon Ibon
- Cinnamon Neopipo
- Cinnamon Quail-thrush
- Cinnamon Screech Owl
- Cinnamon Tanager
- Cinnamon Teal
- Cinnamon Warbling Finch
- Cinnamon Weaver
- Cinnamon Woodpecker
- Cinnamon-banded Kingfisher
- Cinnamon-bellied Flowerpiercer
- Cinnamon-bellied Ground Tyrant
- Cinnamon-bellied Imperial Pigeon
- Cinnamon-breasted Bunting
- Cinnamon-breasted Tit
- Cinnamon-breasted Tody-Tyrant
- Cinnamon-breasted Warbler
- Cinnamon-breasted Whistler
- Cinnamon-browed Melidectes
- Cinnamon-chested Bee-eater
- Cinnamon-chested Flycatcher
- Cinnamon-crested Spadebill
- Cinnamon-faced Tyrannulet
- Cinnamon-headed Green Pigeon
- Cinnamon-rumped Foliage-gleaner
- Cinnamon-rumped Seedeater
- Cinnamon-rumped Trogon
- Cinnamon-sided Hummingbird
- Cinnamon-tailed Fantail
- Cinnamon-tailed Sparrow
- Cinnamon-throated Hermit
- Cinnamon-throated Woodcreeper
- Cinnamon-vented Piha
- Cipo Canastero
- Cirl Bunting
- Citreoline Trogon
- Citril Finch
- Citrine Canary-flycatcher
- Citrine Lorikeet
- Citrine Wagtail
- Citrine Warbler
- Citrine White-eye
- Citron-bellied Attila
- Citron-headed Yellow Finch
- Citron-throated Toucan
- Clamorous Reed Warbler
- Clapper Rail
- Clapperton's Spurfowl
- Claret-breasted Fruit Dove
- Clarion Wren
- Clarke's Weaver
- Clark's Grebe
- Clark's Nutcracker
- Claudia's Leaf Warbler
- Clay-colored Sparrow
- Clay-colored Thrush
- Clicking Shrike-babbler
- Cliff Flycatcher
- Cliff Parakeet
- Cloud Cisticola
- Cloud-forest Pygmy Owl
- Cloud-forest Screech Owl
- Cloven-feathered Dove
- Club-winged Manakin
- Coal Tit
- Coal-crested Finch
- Coastal Cisticola
- Coastal Miner
- Cobalt-winged Parakeet
- Cobb's Wren
- Cocha Antshrike
- Cochabamba Mountain Finch
- Cockatiel
- Cockerell's Fantail
- Cock-tailed Tyrant
- Cocoa Thrush
- Cocoa Woodcreeper
- Cocoi Heron
- Coconut Lorikeet
- Cocos Cuckoo
- Cocos Finch
- Cocos Flycatcher
- Coiba Spinetail
- Coleto
- Colima Pygmy Owl
- Colima Warbler
- Collared Antshrike
- Collared Aracari
- Collared Babbler
- Collared Brushturkey
- Collared Bush Robin
- Collared Crescentchest
- Collared Crow
- Collared Falconet
- Collared Finchbill
- Collared Flycatcher
- Collared Forest Falcon
- Collared Gnatwren
- Collared Grosbeak
- Collared Imperial Pigeon
- Collared Inca
- Collared Kingfisher
- Collared Lark
- Collared Laughingthrush
- Collared Lory
- Collared Myna
- Collared Nightjar
- Collared Owlet
- Collared Palm Thrush
- Collared Petrel
- Collared Plover
- Collared Pratincole
- Collared Puffbird
- Collared Scops Owl
- Collared Sparrowhawk
- Collared Sunbird
- Collared Towhee
- Collared Treepie
- Collared Trogon
- Collared Warbling Finch
- Collared Whitestart
- Colombian Chachalaca
- Colombian Crake
- Colombian Grebe
- Colombian Mountain Grackle
- Colorful Puffleg
- Comb Duck
- Comb-crested Jacana
- Common Babbler
- Common Black Hawk
- Common Blackbird
- Common Bronzewing
- Common Bulbul
- Common Bush Tanager
- Common Buttonquail
- Common Buzzard
- Common Cactus Finch
- Common Chaffinch
- Common Chiffchaff
- Common Cicadabird
- Common Crane
- Common Cuckoo
- Common Diuca Finch
- Common Diving Petrel
- Common Eider
- Common Emerald Dove
- Common Firecrest
- Common Flameback
- Common Gallinule
- Common Goldeneye
- Common Grackle
- Common Grasshopper Warbler
- Common Green Magpie
- Common Greenshank
- Common Ground Dove
- Common Hawk-Cuckoo
- Common Hill Myna
- Common House Martin
- Common Iora
- Common Jery
- Common Kestrel
- Common Kingfisher
- Common Linnet
- Common Loon
- Common Merganser
- Common Miner
- Common Moorhen
- Common Murre
- Common Myna
- Common Newtonia
- Common Nighthawk
- Common Nightingale
- Common Ostrich
- Common Paradise Kingfisher
- Common Pheasant
- Common Pochard
- Common Poorwill
- Common Potoo
- Common Quail
- Common Redpoll
- Common Redshank
- Common Redstart
- Common Reed Bunting
- Common Ringed Plover
- Common Rock Thrush
- Common Rosefinch
- Common Sandpiper
- Common Scale-backed Antbird
- Common Scimitarbill
- Common Scoter
- Common Shelduck
- Common Smoky Honeyeater
- Common Snipe
- Common Square-tailed Drongo
- Common Starling
- Common Sunbird-Asity
- Common Swift
- Common Tailorbird
- Common Tern
- Common Tody-Flycatcher
- Common Waxbill
- Common Whitethroat
- Common Wood Pigeon
- Common Woodshrike
- Common Yellowthroat
- Comoros Blue Pigeon
- Comoros Cuckooshrike
- Comoros Fody
- Comoros Green Pigeon
- Comoros Olive Pigeon
- Comoros Thrush
- Compact Weaver
- Cone-billed Tanager
- Congo Bay Owl
- Congo Martin
- Congo Moor Chat
- Congo Peafowl
- Congo Serpent Eagle
- Congo Sunbird
- Connecticut Warbler
- Cook Reed Warbler
- Cook's Petrel
- Cook's Swift
- Cooper's Hawk
- Coopmans's Elaenia
- Coopmans's Tyrannulet
- Copper Pheasant
- Copper Seedeater
- Copper Sunbird
- Copperback Quail-thrush
- Copper-rumped Hummingbird
- Coppersmith Barbet
- Copper-tailed Starling
- Copper-throated Sunbird
- Coppery Emerald
- Coppery Metaltail
- Coppery-bellied Puffleg
- Coppery-chested Jacamar
- Coppery-headed Emerald
- Coppery-tailed Coucal
- Coquerel's Coua
- Coqui Francolin
- Coral-billed Ground Cuckoo
- Coral-billed Scimitar Babbler
- Coraya Wren
- Cordillera Azul Antbird
- Cordillera Ground Warbler
- Cordilleran Canastero
- Cordilleran Flycatcher
- Cordilleran Parakeet
- Cordoba Cinclodes
- Corn Bunting
- Corn Crake
- Coroneted Fruit Dove
- Correndera Pipit
- Corsican Finch
- Corsican Nuthatch
- Cory's Shearwater
- Coscoroba Swan
- Costa Rican Brushfinch
- Costa Rican Pygmy Owl
- Costa Rican Swift
- Costa's Hummingbird
- Cotton Pygmy Goose
- Couch's Kingbird
- Cozumel Emerald
- Cozumel Thrasher
- Cozumel Vireo
- Crab-plover
- Crag Chilia
- Crane Hawk
- Craveri's Murrelet
- Cream-backed Woodpecker
- Cream-breasted Fruit Dove
- Cream-browed White-eye
- Cream-colored Courser
- Cream-colored Woodpecker
- Cream-eyed Bulbul
- Cream-striped Bulbul
- Cream-throated White-eye
- Cream-vented Bulbul
- Cream-winged Cinclodes
- Creamy-bellied Antwren
- Creamy-bellied Gnatcatcher
- Creamy-bellied Thrush
- Creamy-crested Spinetail
- Creamy-rumped Miner
- Crescent Honeyeater
- Crescent-caped Lophorina
- Crescent-chested Babbler
- Crescent-chested Puffbird
- Crescent-chested Warbler
- Crescent-faced Antpitta
- Crested Ant Tanager
- Crested Auklet
- Crested Barbet
- Crested Becard
- Crested Bellbird
- Crested Berrypecker
- Crested Black Tyrant
- Crested Bobwhite
- Crested Bunting
- Crested Coua
- Crested Cuckoo-Dove
- Crested Doradito
- Crested Drongo
- Crested Duck
- Crested Eagle
- Crested Finchbill
- Crested Fireback
- Crested Francolin
- Crested Gallito
- Crested Goshawk
- Crested Guan
- Crested Guineafowl
- Crested Honey Buzzard
- Crested Hornero
- Crested Ibis
- Crested Jay
- Crested Kingfisher
- Crested Lark
- Crested Malimbe
- Crested Myna
- Crested Oropendola
- Crested Owl
- Crested Partridge
- Crested Pigeon
- Crested Quail-Dove
- Crested Quetzal
- Crested Satinbird
- Crested Serpent Eagle
- Crested Shelduck
- Crested Shriketit
- Crested Spinetail
- Crested Tit-warbler
- Crested Treeswift
- Crested White-eye
- Crestless Curassow
- Crestless Fireback
- Cretzschmar's Bunting
- Cricket Warbler
- Crimson Chat
- Crimson Finch
- Crimson Fruitcrow
- Crimson Rosella
- Crimson Seedcracker
- Crimson Shining Parrot
- Crimson Sunbird
- Crimson Topaz
- Crimson-backed Flameback
- Crimson-backed Sunbird
- Crimson-backed Tanager
- Crimson-bellied Parakeet
- Crimson-bellied Woodpecker
- Crimson-breasted Finch
- Crimson-breasted Flowerpecker
- Crimson-breasted Shrike
- Crimson-breasted Woodpecker
- Crimson-browed Finch
- Crimson-collared Grosbeak
- Crimson-collared Tanager
- Crimson-crested Woodpecker
- Crimson-crowned Flowerpecker
- Crimson-crowned Fruit Dove
- Crimson-fronted Barbet
- Crimson-fronted Cardinal
- Crimson-headed Partridge
- Crimson-hooded Manakin
- Crimson-hooded Myzomela
- Crimson-mantled Woodpecker
- Crimson-rumped Myzomela
- Crimson-rumped Toucanet
- Crimson-rumped Waxbill
- Crimson-winged Woodpecker
- Crinkle-collared Manucode
- Crissal Thrasher
- Croaking Cisticola
- Croaking Ground Dove
- Crossley's Ground Thrush
- Crossley's Vanga
- Crow Honeyeater
- Crow-billed Drongo
- Crowned Chat-Tyrant
- Crowned Cormorant
- Crowned Eagle
- Crowned Hornbill
- Crowned Lapwing
- Crowned Sandgrouse
- Crowned Slaty Flycatcher
- Crowned Woodnymph
- Crozet Shag
- Cryptic Antthrush
- Cryptic Flycatcher
- Cryptic Forest Falcon
- Cryptic Honeyeater
- Cryptic Treehunter
- Cryptic Warbler
- Cuban Amazon
- Cuban Black Hawk
- Cuban Blackbird
- Cuban Bullfinch
- Cuban Crow
- Cuban Emerald
- Cuban Gnatcatcher
- Cuban Grassquit
- Cuban Green Woodpecker
- Cuban Kite
- Cuban Macaw
- Cuban Martin
- Cuban Nightjar
- Cuban Oriole
- Cuban Palm Crow
- Cuban Parakeet
- Cuban Pewee
- Cuban Pygmy Owl
- Cuban Solitaire
- Cuban Tody
- Cuban Trogon
- Cuban Vireo
- Cuckoo Roller
- Cuckoo-finch
- Cundinamarca Antpitta
- Curl-crested Aracari
- Curl-crested Jay
- Curl-crested Manucode
- Curlew Sandpiper
- Curve-billed Reedhaunter
- Curve-billed Scythebill
- Curve-billed Thrasher
- Curve-billed Tinamou
- Curve-winged Sabrewing
- Cut-throat Finch
- Cuzco Brushfinch
- Cuzco Warbler
- Cyprus Scops Owl
- Cyprus Warbler
- Cyprus Wheatear
- Dagua Thrush
- Dalat Bush Warbler
- Dalat Shrike-babbler
- Dalmatian Pelican
- Damar Flycatcher
- Damara Red-billed Hornbill
- Damara Tern
- Dambo Cisticola
- Dapple-throat
- Darjeeling Woodpecker
- Dark Batis
- Dark Chanting Goshawk
- Dark Hawk-Cuckoo
- Dark Newtonia
- Dark Pewee
- Dark-backed Imperial Pigeon
- Dark-backed Sibia
- Dark-backed Weaver
- Dark-backed Wood Quail
- Dark-bellied Cinclodes
- Dark-billed Cuckoo
- Dark-breasted Rosefinch
- Dark-breasted Spinetail
- Dark-capped Bulbul
- Dark-eared Myza
- Dark-eyed Junco
- Dark-eyed White-eye
- Dark-faced Ground Tyrant
- Dark-fronted Babbler
- Dark-necked Tailorbird
- Dark-rumped Rosefinch
- Dark-rumped Swift
- Dark-sided Flycatcher
- Dark-sided Thrush
- Dark-throated Oriole
- Dark-throated Seedeater
- Dark-winged Canastero
- Dark-winged Miner
- Dark-winged Trumpeter
- D'Arnaud's Barbet
- Dartford Warbler
- Darwin's Flycatcher
- Darwin's Nothura
- Daurian Jackdaw
- Daurian Partridge
- Daurian Redstart
- Daurian Starling
- David's Fulvetta
- Davison's Leaf Warbler
- De Filippi's Petrel
- Dead Sea Sparrow
- Deignan's Prinia
- Delta Amacuro Softtail
- Demoiselle Crane
- Denham's Bustard
- Des Murs's Wiretail
- Desert Cisticola
- Desert Finch
- Desert Lark
- Desert Owl
- Desert Sparrow
- Desert Wheatear
- Desert Whitethroat
- Desertas Petrel
- Diademed Amazon
- Diademed Sandpiper-Plover
- Diademed Tanager
- Diademed Tapaculo
- Diamantina Tapaculo
- Diamond Dove
- Diamond Firetail
- Diard's Trogon
- Dickcissel
- Dickinson's Kestrel
- Diederik Cuckoo
- Dieffenbach's Rail
- Dimorphic Dwarf Kingfisher
- Dimorphic Egret
- Dimorphic Fantail
- Dinelli's Doradito
- Dja River Scrub Warbler
- Djibouti Spurfowl
- Dodo
- Dodson's Bulbul
- Doherty's Bushshrike
- Dohrn's Warbler
- Dolphin Gull
- Donaldson Smith's Nightjar
- Donaldson Smith's Sparrow-Weaver
- D'Orbigny's Chat-Tyrant
- Doria's Goshawk
- Dorst's Cisticola
- Dot-backed Antbird
- Dot-eared Coquette
- Dot-fronted Woodpecker
- Dotted Tanager
- Dot-winged Antwren
- Dot-winged Crake
- Double-banded Courser
- Double-banded Greytail
- Double-banded Plover
- Double-banded Pygmy Tyrant
- Double-banded Sandgrouse
- Double-barred Finch
- Double-collared Crescentchest
- Double-collared Seedeater
- Double-crested Cormorant
- Doubleday's Hummingbird
- Double-eyed Fig Parrot
- Double-spurred Spurfowl
- Double-striped Thick-knee
- Double-toothed Barbet
- Double-toothed Kite
- Downy Woodpecker
- Drab Hemispingus
- Drab Myzomela
- Drab Seedeater
- Drab Swiftlet
- Drab Water Tyrant
- Drab Whistler
- Drab-breasted Bamboo Tyrant
- Drakensberg Prinia
- Drakensberg Rockjumper
- Drakensberg Siskin
- Drongo Fantail
- Dubois's Seedeater
- Duchess Lorikeet
- Dugand's Antwren
- Duida Grass Finch
- Duida Woodcreeper
- Dulit Frogmouth
- Dull-blue Flycatcher
- Dull-colored Grassquit
- Dull-mantled Antbird
- Dune Lark
- Dunlin
- Dunnock
- Dunn's Lark
- Dupont's Lark
- Dusky Antbird
- Dusky Babbler
- Dusky Broadbill
- Dusky Bush Tanager
- Dusky Crag Martin
- Dusky Crested Flycatcher
- Dusky Crimsonwing
- Dusky Eagle-Owl
- Dusky Friarbird
- Dusky Fulvetta
- Dusky Gerygone
- Dusky Grasswren
- Dusky Grouse
- Dusky Hummingbird
- Dusky Indigobird
- Dusky Lark
- Dusky Leaftosser
- Dusky Long-tailed Cuckoo
- Dusky Lory
- Dusky Megapode
- Dusky Moorhen
- Dusky Munia
- Dusky Myzomela
- Dusky Nightjar
- Dusky Parrot
- Dusky Pigeon
- Dusky Piha
- Dusky Purpletuft
- Dusky Robin
- Dusky Spinetail
- Dusky Starfrontlet
- Dusky Sunbird
- Dusky Tapaculo
- Dusky Tetraka
- Dusky Thrush
- Dusky Tit
- Dusky Turtle Dove
- Dusky Twinspot
- Dusky Warbler
- Dusky White-eye
- Dusky Woodswallow
- Dusky-backed Jacamar
- Dusky-billed Parrotlet
- Dusky-blue Flycatcher
- Dusky-brown Oriole
- Dusky-capped Flycatcher
- Dusky-capped Greenlet
- Dusky-chested Flycatcher
- Dusky-faced Tanager
- Dusky-green Oropendola
- Dusky-headed Brushfinch
- Dusky-headed Parakeet
- Dusky-legged Guan
- Dusky-tailed Antbird
- Dusky-tailed Canastero
- Dusky-tailed Flatbill
- Dusky-throated Antshrike
- Dusky-throated Hermit
- Dwarf Bittern
- Dwarf Cassowary
- Dwarf Cuckoo
- Dwarf Fruit Dove
- Dwarf Honeyguide
- Dwarf Jay
- Dwarf Koel
- Dwarf Longbill
- Dwarf Sparrowhawk
- Dwarf Tinamou
- Dwarf Tyrant-Manakin
- Dwarf Vireo
- Dybowski's Twinspot
- Eared Dove
- Eared Pitta
- Eared Poorwill
- Eared Pygmy Tyrant
- Eared Quetzal
- East Amazonian Fire-eye
- East Andean Antbird
- East Brazilian Chachalaca
- East Brazilian Pygmy Owl
- East Coast Akalat
- East Coast Boubou
- Eastern Alpine Mannikin
- Eastern Barn Owl
- Eastern Bearded Greenbul
- Eastern Black-eared Wheatear
- Eastern Black-headed Batis
- Eastern Bluebird
- Eastern Bluebonnet
- Eastern Bonelli's Warbler
- Eastern Bristlebird
- Eastern Bronze-naped Pigeon
- Eastern Buzzard
- Eastern Cattle Egret
- Eastern Chanting Goshawk
- Eastern Chat-Tanager
- Eastern Clapper Lark
- Eastern Crowned Warbler
- Eastern Double-collared Sunbird
- Eastern Golden Weaver
- Eastern Grass Owl
- Eastern Grey Woodpecker
- Eastern Ground Parrot
- Eastern Imperial Eagle
- Eastern Jungle Crow
- Eastern Kingbird
- Eastern Long-billed Lark
- Eastern Marsh Harrier
- Eastern Meadowlark
- Eastern Miombo Sunbird
- Eastern Nicator
- Eastern Olivaceous Warbler
- Eastern Orphean Warbler
- Eastern Osprey
- Eastern Parotia
- Eastern Phoebe
- Eastern Plantain-eater
- Eastern Rock Nuthatch
- Eastern Rosella
- Eastern Screech Owl
- Eastern Spinebill
- Eastern Spot-billed Duck
- Eastern Striolated Puffbird
- Eastern Subalpine Warbler
- Eastern Towhee
- Eastern Violet-backed Sunbird
- Eastern Wattled Cuckooshrike
- Eastern Whipbird
- Eastern Whip-poor-will
- Eastern Wood Pewee
- Eastern Woodhaunter
- Eastern Yellow Robin
- Eastern Yellow Wagtail
- Eastern Yellow-billed Hornbill
- Eaton's Pintail
- Echo Parakeet
- Eclectus Parrot
- Ecuadorian Cacique
- Ecuadorian Ground Dove
- Ecuadorian Hillstar
- Ecuadorian Piculet
- Ecuadorian Piedtail
- Ecuadorian Rail
- Ecuadorian Seedeater
- Ecuadorian Thrush
- Ecuadorian Trogon
- Ecuadorian Tyrannulet
- Edible-nest Swiftlet
- Edwards's Fig Parrot
- Edwards's Pheasant
- Egyptian Goose
- Egyptian Nightjar
- Egyptian Plover
- Egyptian Vulture
- Eiao Monarch
- El Oro Parakeet
- El Oro Tapaculo
- Elegant Crescentchest
- Elegant Crested Tinamou
- Elegant Euphonia
- Elegant Honeyeater
- Elegant Imperial Pigeon
- Elegant Parrot
- Elegant Pitta
- Elegant Quail
- Elegant Sunbird
- Elegant Tern
- Elegant Tit
- Elegant Trogon
- Elegant Woodcreeper
- Eleonora's Falcon
- Elf Owl
- Elfin Woods Warbler
- Elliot's Laughingthrush
- Elliot's Pheasant
- Elliot's Storm Petrel
- Elliot's Woodpecker
- Elusive Antpitta
- Emei Leaf Warbler
- Emei Shan Liocichla
- Emerald Starling
- Emerald Tanager
- Emerald Toucanet
- Emerald-bellied Puffleg
- Emerald-chinned Hummingbird
- Emerald-spotted Wood Dove
- Emin's Shrike
- Emperor Bird-of-paradise
- Emperor Fairywren
- Emperor Goose
- Emperor Penguin
- Empress Brilliant
- Emu
- Enggano Cuckoo-Dove
- Enggano Hill Myna
- Enggano Scops Owl
- Enggano Thrush
- Epaulet Oriole
- Equatorial Akalat
- Equatorial Greytail
- Erckel's Spurfowl
- Erect-crested Penguin
- Eskimo Curlew
- Esmeraldas Antbird
- Esmeraldas Woodstar
- Espanola Cactus Finch
- Espanola Mockingbird
- Ethiopian Boubou
- Ethiopian Cisticola
- Ethiopian Oriole
- Ethiopian Siskin
- Ethiopian Swallow
- Euler's Flycatcher
- Eungella Honeyeater
- Eurasian Bittern
- Eurasian Blackcap
- Eurasian Blue Tit
- Eurasian Bullfinch
- Eurasian Collared Dove
- Eurasian Coot
- Eurasian Crag Martin
- Eurasian Curlew
- Eurasian Dotterel
- Eurasian Eagle-Owl
- Eurasian Golden Oriole
- Eurasian Hobby
- Eurasian Hoopoe
- Eurasian Jay
- Eurasian Magpie
- Eurasian Nuthatch
- Eurasian Oystercatcher
- Eurasian Penduline Tit
- Eurasian Pygmy Owl
- Eurasian Reed Warbler
- Eurasian Rock Pipit
- Eurasian Scops Owl
- Eurasian Siskin
- Eurasian Skylark
- Eurasian Sparrowhawk
- Eurasian Spoonbill
- Eurasian Stone-curlew
- Eurasian Teal
- Eurasian Three-toed Woodpecker
- Eurasian Tree Sparrow
- Eurasian Treecreeper
- Eurasian Whimbrel
- Eurasian Wigeon
- Eurasian Woodcock
- Eurasian Wren
- Eurasian Wryneck
- European Bee-eater
- European Crested Tit
- European Golden Plover
- European Goldfinch
- European Green Woodpecker
- European Greenfinch
- European Herring Gull
- European Honey Buzzard
- European Nightjar
- European Pied Flycatcher
- European Robin
- European Roller
- European Serin
- European Shag
- European Stonechat
- European Storm Petrel
- European Turtle Dove
- Evening Grosbeak
- Everett's Scops Owl
- Everett's Thrush
- Everett's White-eye
- Evergreen Forest Warbler
- Eversmann's Redstart
- Exclamatory Paradise Whydah
- Eyebrowed Jungle Flycatcher
- Eyebrowed Thrush
- Eyebrowed Wren-Babbler
- Eye-ringed Flatbill
- Eye-ringed Thistletail
- Eye-ringed Tody-Tyrant
- Eyrean Grasswren
- Fairy Flycatcher
- Fairy Gerygone
- Fairy Lorikeet
- Fairy Martin
- Fairy Pitta
- Fairy Prion
- Fairy Tern
- Falcated Duck
- Falcated Wren-Babbler
- Falkenstein's Greenbul
- Falkland Steamer Duck
- Familiar Chat
- Fan-tailed Berrypecker
- Fan-tailed Cuckoo
- Fan-tailed Gerygone
- Fan-tailed Grassbird
- Fan-tailed Raven
- Fan-tailed Warbler
- Fan-tailed Widowbird
- Fanti Drongo
- Fanti Saw-wing
- Far Eastern Curlew
- Fasciated Antshrike
- Fasciated Tiger Heron
- Fasciated Wren
- Fatu Hiva Monarch
- Fawn-breasted Bowerbird
- Fawn-breasted Brilliant
- Fawn-breasted Tanager
- Fawn-breasted Thrush
- Fawn-breasted Waxbill
- Fawn-breasted Whistler
- Fawn-breasted Wren
- Fawn-colored Lark
- Fearful Owl
- Fea's Petrel
- Feline Owlet-nightjar
- Fernandina's Flicker
- Fernando Po Batis
- Fernando Po Speirops
- Fernando Po Swift
- Fernwren
- Ferruginous Antbird
- Ferruginous Babbler
- Ferruginous Duck
- Ferruginous Flycatcher
- Ferruginous Hawk
- Ferruginous Partridge
- Ferruginous Pygmy Owl
- Ferruginous-backed Antbird
- Festive Amazon
- Festive Coquette
- Field Sparrow
- Fieldfare
- Fiery Minivet
- Fiery Topaz
- Fiery-billed Aracari
- Fiery-breasted Bushshrike
- Fiery-browed Starling
- Fiery-capped Manakin
- Fiery-necked Nightjar
- Fiery-shouldered Parakeet
- Fiery-tailed Awlbill
- Fiery-throated Fruiteater
- Fiery-throated Hummingbird
- Fiery-throated Metaltail
- Fiji Bush Warbler
- Fiji Goshawk
- Fiji Parrotfinch
- Fiji Petrel
- Fiji Shrikebill
- Fiji Wattled Honeyeater
- Fiji Whistler
- Fiji White-eye
- Fiji Woodswallow
- Fine-banded Woodpecker
- Fine-barred Piculet
- Fine-spotted Woodpecker
- Finn's Weaver
- Finsch's Bulbul
- Finsch's Euphonia
- Finsch's Francolin
- Finsch's Imperial Pigeon
- Finsch's Parakeet
- Finsch's Pygmy Parrot
- Finsch's Rufous Thrush
- Finsch's Wheatear
- Fiordland Penguin
- Fire-bellied Woodpecker
- Fire-breasted Flowerpecker
- Fire-capped Tit
- Fire-crested Alethe
- Fire-eyed Diucon
- Fire-fronted Bishop
- Fire-maned Bowerbird
- Fire-tailed Myzornis
- Fire-tailed Sunbird
- Firethroat
- Fire-tufted Barbet
- Firewood-gatherer
- Fiscal Flycatcher
- Fischer's Greenbul
- Fischer's Lovebird
- Fischer's Sparrow-Lark
- Fischer's Starling
- Fischer's Turaco
- Fish Crow
- Five-colored Barbet
- Five-colored Munia
- Five-striped Sparrow
- Flame Bowerbird
- Flame Robin
- Flame-breasted Flowerpecker
- Flame-breasted Fruit Dove
- Flame-breasted Sunbird
- Flame-colored Tanager
- Flamecrest
- Flame-crested Manakin
- Flame-crested Tanager
- Flame-crowned Flowerpecker
- Flame-eared Honeyeater
- Flame-faced Tanager
- Flame-fronted Barbet
- Flame-rumped Tanager
- Flame-templed Babbler
- Flame-throated Bulbul
- Flame-throated Sunangel
- Flame-throated Warbler
- Flame-winged Parakeet
- Flaming Sunbird
- Flammulated Bamboo Tyrant
- Flammulated Flycatcher
- Flammulated Owl
- Flammulated Treehunter
- Flappet Lark
- Flat-billed Kingfisher
- Flat-billed Vireo
- Flavescent Bulbul
- Flavescent Flycatcher
- Flavescent Warbler
- Flesh-footed Shearwater
- Flightless Cormorant
- Flock Bronzewing
- Floreana Mockingbird
- Flores Crow
- Flores Green Pigeon
- Flores Hawk-Eagle
- Flores Monarch
- Flores Scops Owl
- Flores Sea Cuckoo-Dove
- Florida Scrub Jay
- Fluffy-backed Tit-Babbler
- Flutist Wren
- Fluttering Shearwater
- Fly River Grassbird
- Flying Steamer Duck
- Foothill Elaenia
- Foothill Schiffornis
- Foothill Screech Owl
- Foothill Stipplethroat
- Forbes's Blackbird
- Forbes's Forest Rail
- Forbes's Mannikin
- Forbes's Plover
- Forbes-Watson's Swift
- Forest Batis
- Forest Bittern
- Forest Buzzard
- Forest Canary
- Forest Double-collared Sunbird
- Forest Elaenia
- Forest Fody
- Forest Honeyeater
- Forest Kingfisher
- Forest Owlet
- Forest Penduline Tit
- Forest Raven
- Forest Robin
- Forest Rock Thrush
- Forest Scrub Robin
- Forest Swallow
- Forest Thrush
- Forest Wagtail
- Forest White-eye
- Forest Wood Hoopoe
- Fork-tailed Drongo
- Fork-tailed Drongo-Cuckoo
- Fork-tailed Flycatcher
- Fork-tailed Storm Petrel
- Fork-tailed Sunbird
- Fork-tailed Tody-Tyrant
- Fork-tailed Woodnymph
- Forster's Tern
- Forty-spotted Pardalote
- Four-banded Sandgrouse
- Foveaux Shag
- Fox Kestrel
- Fox's Weaver
- Foxy Cisticola
- Foxy Lark
- Frances's Sparrowhawk
- Franklin's Gull
- Fraser's Eagle-Owl
- Fraser's Forest Flycatcher
- Fraser's Rufous Thrush
- Fraser's Sunbird
- Freckle-breasted Thornbird
- Freckle-breasted Woodpecker
- Freckled Duck
- Freckled Nightjar
- Friedmann's Lark
- Friendly Bush Warbler
- Friendly Fantail
- Frilled Coquette
- Frilled Monarch
- Frill-necked Monarch
- Fringe-backed Fire-eye
- Fruithunter
- Fuegian Snipe
- Fuegian Steamer Duck
- Fuertes's Parrot
- Fujian Niltava
- Fülleborn's Boubou
- Fülleborn's Longclaw
- Fulmar Prion
- Fulvous Antshrike
- Fulvous Babbler
- Fulvous Owl
- Fulvous Parrotbill
- Fulvous Shrike-Tanager
- Fulvous Whistling Duck
- Fulvous Wren
- Fulvous-breasted Flatbill
- Fulvous-breasted Woodpecker
- Fulvous-chested Jungle Flycatcher
- Fulvous-chinned Nunlet
- Fulvous-crested Tanager
- Fulvous-headed Brushfinch
- Fulvous-headed Tanager
- Fulvous-vented Euphonia
- Furtive Flycatcher
- Fuscous Flycatcher
- Fuscous Honeyeater
- Gabar Goshawk
- Gabela Akalat
- Gabela Bushshrike
- Gabela Helmetshrike
- Gabon Batis
- Gabon Coucal
- Gabon Woodpecker
- Gadwall
- Galah
- Galapagos Crake
- Galapagos Dove
- Galapagos Flycatcher
- Galapagos Hawk
- Galapagos Martin
- Galapagos Mockingbird
- Galapagos Penguin
- Galapagos Petrel
- Galapagos Shearwater
- Gambaga Flycatcher
- Gambel's Quail
- Gang-gang Cockatoo
- Gansu Leaf Warbler
- Garden Emerald
- Garden Warbler
- Garganey
- Garnet Pitta
- Garnet Robin
- Garnet-throated Hummingbird
- Garrett's Reed Warbler
- Gartered Trogon
- Geelvink Pygmy Parrot
- Genovesa Cactus Finch
- Genovesa Ground Finch
- Gentoo Penguin
- Geoffroy's Daggerbill
- Geomalia
- Germain's Peacock-Pheasant
- Germain's Swiftlet
- Giant Antpitta
- Giant Antshrike
- Giant Babax
- Giant Conebill
- Giant Coot
- Giant Coua
- Giant Cowbird
- Giant Honeyeater
- Giant Hummingbird
- Giant Ibis
- Giant Kingbird
- Giant Kingfisher
- Giant Laughingthrush
- Giant Nuthatch
- Giant Pitta
- Giant Scops Owl
- Giant Snipe
- Giant Sunbird
- Giant Swiftlet
- Giant Weaver
- Giant White-eye
- Giant Wood Rail
- Giant Wren
- Gibberbird
- Gila Woodpecker
- Gilbert's Honeyeater
- Gilbert's Whistler
- Gilded Barbet
- Gilded Flicker
- Gilded Sapphire
- Gillett's Lark
- Gilliard's Honeyeater
- Gilt-edged Tanager
- Gizo White-eye
- Glaucous Gull
- Glaucous Macaw
- Glaucous Tanager
- Glaucous-blue Grosbeak
- Glaucous-winged Gull
- Glistening-green Tanager
- Glittering Kingfisher
- Glittering-bellied Emerald
- Glittering-throated Emerald
- Glossy Antshrike
- Glossy Black Cockatoo
- Glossy Flowerpiercer
- Glossy Ibis
- Glossy Swiftlet
- Glossy-backed Becard
- Glossy-backed Drongo
- Glossy-black Thrush
- Glossy-mantled Manucode
- Glowing Puffleg
- Glow-throated Hummingbird
- Godlewski's Bunting
- Goeldi's Antbird
- Gola Malimbe
- Goldcrest
- Golden Babbler
- Golden Bowerbird
- Golden Bush Robin
- Golden Cuckooshrike
- Golden Eagle
- Golden Fruit Dove
- Golden Greenbul
- Golden Grosbeak
- Golden Masked Owl
- Golden Monarch
- Golden Myna
- Golden Nightjar
- Golden Palm Weaver
- Golden Parakeet
- Golden Parrotbill
- Golden Pheasant
- Golden Pipit
- Golden Swallow
- Golden Tanager
- Golden Vireo
- Golden White-eye
- Golden-backed Bishop
- Golden-backed Mountain Tanager
- Golden-backed Weaver
- Golden-backed Whistler
- Golden-bellied Flycatcher
- Golden-bellied Flyrobin
- Golden-bellied Gerygone
- Golden-bellied Starfrontlet
- Golden-bellied White-eye
- Golden-billed Saltator
- Golden-breasted Bunting
- Golden-breasted Fruiteater
- Golden-breasted Fulvetta
- Golden-breasted Puffleg
- Golden-breasted Starling
- Golden-browed Chat-Tyrant
- Golden-browed Chlorophonia
- Golden-browed Warbler
- Golden-capped Parakeet
- Golden-cheeked Warbler
- Golden-cheeked Woodpecker
- Golden-chested Tanager
- Golden-chevroned Tanager
- Golden-collared Honeycreeper
- Golden-collared Macaw
- Golden-collared Manakin
- Golden-collared Tanager
- Golden-collared Toucanet
- Golden-collared Woodpecker
- Golden-crested Myna
- Golden-crowned Babbler
- Golden-crowned Emerald
- Golden-crowned Flycatcher
- Golden-crowned Kinglet
- Golden-crowned Manakin
- Golden-crowned Spadebill
- Golden-crowned Sparrow
- Golden-crowned Tanager
- Golden-crowned Warbler
- Golden-eared Tanager
- Golden-eyed Flowerpiercer
- Goldenface
- Golden-faced Tyrannulet
- Golden-fronted Bowerbird
- Golden-fronted Fulvetta
- Golden-fronted Greenlet
- Golden-fronted Leafbird
- Golden-fronted Whitestart
- Golden-fronted Woodpecker
- Golden-green Woodpecker
- Golden-headed Cisticola
- Golden-headed Manakin
- Golden-headed Quetzal
- Golden-hooded Tanager
- Golden-mantled Racket-tail
- Golden-naped Barbet
- Golden-naped Finch
- Golden-naped Tanager
- Golden-naped Weaver
- Golden-naped Woodpecker
- Golden-olive Woodpecker
- Golden-plumed Parakeet
- Golden-rumped Euphonia
- Golden-rumped Flowerpecker
- Golden-shouldered Parrot
- Golden-sided Euphonia
- Golden-spangled Piculet
- Golden-spotted Ground Dove
- Golden-tailed Parrotlet
- Golden-tailed Sapphire
- Golden-tailed Woodpecker
- Golden-throated Barbet
- Golden-tufted Mountain Grackle
- Golden-whiskered Barbet
- Golden-winged Cacique
- Golden-winged Laughingthrush
- Golden-winged Manakin
- Golden-winged Parakeet
- Golden-winged Sparrow
- Golden-winged Sunbird
- Golden-winged Tody-Flycatcher
- Golden-winged Warbler
- Goldie's Bird-of-paradise
- Goldie's Lorikeet
- Goldman's Warbler
- Gold-ringed Tanager
- Goliath Coucal
- Goliath Heron
- Goliath Imperial Pigeon
- Gorgeous Bushshrike
- Gorgeted Puffleg
- Gorgeted Sunangel
- Gorgeted Wood Quail
- Gorgeted Woodstar
- Gosling's Apalis
- Gosling's Bunting
- Gough Finch
- Gough Moorhen
- Gouldian Finch
- Gould's Emerald
- Gould's Frogmouth
- Gould's Jewelfront
- Gould's Nightingale-Thrush
- Gould's Petrel
- Gould's Shortwing
- Gould's Toucanet
- Graceful Honeyeater
- Graceful Pitta
- Graceful Prinia
- Grace's Warbler
- Gran Canaria Blue Chaffinch
- Grand Cayman Thrush
- Grand Comoro Brush Warbler
- Grand Comoro Bulbul
- Grand Comoro Drongo
- Grand Rhabdornis
- Grandala
- Grant's Bluebill
- Grant's Wood Hoopoe
- Grass Wren
- Grass-green Tanager
- Grasshopper Buzzard
- Grasshopper Sparrow
- Grassland Sparrow
- Grassland Yellow Finch
- Grauer's Broadbill
- Grauer's Cuckooshrike
- Grauer's Swamp Warbler
- Grauer's Warbler
- Gray's Grasshopper Warbler
- Gray's Lark
- Great Antpitta
- Great Antshrike
- Great Argus
- Great Auk
- Great Barbet
- Great Black Hawk
- Great Black-backed Gull
- Great Blue Heron
- Great Blue Turaco
- Great Bowerbird
- Great Bustard
- Great Cormorant
- Great Crested Flycatcher
- Great Crested Grebe
- Great Cuckoo-Dove
- Great Curassow
- Great Dusky Swift
- Great Eared Nightjar
- Great Egret
- Great Elaenia
- Great Frigatebird
- Great Grebe
- Great Green Macaw
- Great Grey Owl
- Great Grey Shrike
- Great Hanging Parrot
- Great Hornbill
- Great Horned Owl
- Great Inca Finch
- Great Indian Bustard
- Great Iora
- Great Jacamar
- Great Kiskadee
- Great Knot
- Great Lizard Cuckoo
- Great Myna
- Great Nicobar Serpent Eagle
- Great Parrotbill
- Great Potoo
- Great Reed Warbler
- Great Rosefinch
- Great Rufous Woodcreeper
- Great Sapphirewing
- Great Shearwater
- Great Shortwing
- Great Shrike-Tyrant
- Great Skua
- Great Slaty Woodpecker
- Great Snipe
- Great Sparrow
- Great Spinetail
- Great Spotted Cuckoo
- Great Spotted Kiwi
- Great Spotted Woodpecker
- Great Stone-curlew
- Great Swallow-tailed Swift
- Great Thrush
- Great Tinamou
- Great Tit
- Great White Pelican
- Great Woodswallow
- Great Xenops
- Great-billed Hermit
- Great-billed Heron
- Great-billed Kingfisher
- Great-billed Mannikin
- Great-billed Parrot
- Great-billed Seed Finch
- Greater Adjutant
- Greater Amakihi
- Greater Ani
- Greater Antillean Bullfinch
- Greater Antillean Elaenia
- Greater Antillean Grackle
- Greater Bird-of-paradise
- Greater Blue-eared Starling
- Greater Coucal
- Greater Crested Tern
- Greater Double-collared Sunbird
- Greater Flameback
- Greater Flamingo
- Greater Flowerpiercer
- Greater Green Leafbird
- Greater Ground Robin
- Greater Honeyguide
- Greater Hoopoe-Lark
- Greater Kestrel
- Greater Koa Finch
- Greater Lophorina
- Greater Melampitta
- Greater Necklaced Laughingthrush
- Greater Painted-snipe
- Greater Pewee
- Greater Prairie Chicken
- Greater Racket-tailed Drongo
- Greater Rhea
- Greater Roadrunner
- Greater Sand Plover
- Greater Scaup
- Greater Scythebill
- Greater Short-toed Lark
- Greater Sooty Owl
- Greater Spotted Eagle
- Greater Striped Swallow
- Greater Swamp Warbler
- Greater Thornbird
- Greater Vasa Parrot
- Greater Wagtail-Tyrant
- Greater White-fronted Goose
- Greater Yellow Finch
- Greater Yellow-headed Vulture
- Greater Yellowlegs
- Greater Yellownape
- Great-tailed Grackle
- Great-winged Petrel
- Green Aracari
- Green Avadavat
- Green Barbet
- Green Bee-eater
- Green Broadbill
- Green Catbird
- Green Cochoa
- Green Crombec
- Green Figbird
- Green Hermit
- Green Heron
- Green Honeycreeper
- Green Hylia
- Green Ibis
- Green Imperial Pigeon
- Green Iora
- Green Jay
- Green Jery
- Green Junglefowl
- Green Kingfisher
- Green Longtail
- Green Malkoha
- Green Manakin
- Green Mango
- Green Oriole
- Green Oropendola
- Green Parakeet
- Green Peafowl
- Green Pheasant
- Green Pygmy Goose
- Green Racket-tail
- Green Rosella
- Green Sandpiper
- Green Shrike-babbler
- Green Shrike-Vireo
- Green Thorntail
- Green Tinkerbird
- Green Twinspot
- Green Warbler
- Green Warbler-Finch
- Green White-eye
- Green Wood Hoopoe
- Green-and-black Fruiteater
- Green-and-gold Tanager
- Green-and-rufous Kingfisher
- Green-and-white Hummingbird
- Green-backed Becard
- Green-backed Camaroptera
- Green-backed Eremomela
- Green-backed Firecrown
- Green-backed Flycatcher
- Green-backed Gerygone
- Green-backed Hillstar
- Green-backed Honeybird
- Green-backed Honeyeater
- Green-backed Kingfisher
- Green-backed Robin
- Green-backed Sparrow
- Green-backed Tit
- Green-backed Trogon
- Green-backed Whistler
- Green-backed White-eye
- Green-backed Woodpecker
- Green-barred Woodpecker
- Green-bearded Helmetcrest
- Green-bellied Hummingbird
- Green-billed Coucal
- Green-billed Malkoha
- Green-billed Toucan
- Green-breasted Bushshrike
- Green-breasted Mango
- Green-breasted Mountaingem
- Green-breasted Pitta
- Green-capped Eremomela
- Green-capped Tanager
- Green-cheeked Parakeet
- Green-chinned Euphonia
- Green-crowned Brilliant
- Green-crowned Plovercrest
- Green-crowned Warbler
- Green-eared Barbet
- Green-faced Parrotfinch
- Green-fronted Hummingbird
- Green-fronted Lancebill
- Green-headed Hillstar
- Green-headed Oriole
- Green-headed Sunbird
- Green-headed Tanager
- Greenish Elaenia
- Greenish Puffleg
- Greenish Schiffornis
- Greenish Tyrannulet
- Greenish Warbler
- Greenish Yellow Finch
- Green-legged Partridge
- Green-naped Tanager
- Green-rumped Parrotlet
- Green-striped Brushfinch
- Green-tailed Bristlebill
- Green-tailed Emerald
- Green-tailed Goldenthroat
- Green-tailed Jacamar
- Green-tailed Sunbird
- Green-tailed Towhee
- Green-tailed Trainbearer
- Green-tailed Warbler
- Green-throated Carib
- Green-throated Mango
- Green-throated Mountaingem
- Green-throated Sunbird
- Green-winged Pytilia
- Green-winged Saltator
- Green-winged Teal
- Grenada Dove
- Grenada Flycatcher
- Grey Antbird
- Grey Antwren
- Grey Apalis
- Grey Bunting
- Grey Bush Chat
- Grey Butcherbird
- Grey Catbird
- Grey Crested Tit
- Grey Crow
- Grey Crowned Crane
- Grey Cuckooshrike
- Grey Currawong
- Grey Elaenia
- Grey Emutail
- Grey Falcon
- Grey Fantail
- Grey Francolin
- Grey Friarbird
- Grey Gerygone
- Grey Go-away-bird
- Grey Goshawk
- Grey Grasswren
- Grey Ground Thrush
- Grey Gull
- Grey Hawk
- Grey Heron
- Grey Honeyeater
- Grey Hypocolius
- Grey Imperial Pigeon
- Grey Junglefowl
- Grey Kestrel
- Grey Kingbird
- Grey Laughingthrush
- Grey Longbill
- Grey Monjita
- Grey Nightjar
- Grey Noddy
- Grey Parrot
- Grey Partridge
- Grey Peacock-Pheasant
- Grey Penduline Tit
- Grey Petrel
- Grey Pileated Finch
- Grey Plover
- Grey Pratincole
- Grey Seedeater
- Grey Shrikethrush
- Grey Sibia
- Grey Silky-flycatcher
- Grey Sunbird
- Grey Teal
- Grey Thornbill
- Grey Thrasher
- Grey Tinamou
- Grey Tit
- Grey Tit-Flycatcher
- Grey Treepie
- Grey Trembler
- Grey Vireo
- Grey Wagtail
- Grey Warbler-Finch
- Grey Waxbill
- Grey Whistler
- Grey Wren
- Grey Wren-Warbler
- Grey-and-buff Woodpecker
- Grey-and-gold Tanager
- Grey-and-gold Warbler
- Grey-and-white Tyrannulet
- Grey-backed Camaroptera
- Grey-backed Cisticola
- Grey-backed Fiscal
- Grey-backed Hawk
- Grey-backed Shrike
- Grey-backed Sparrow-Lark
- Grey-backed Storm Petrel
- Grey-backed Tachuri
- Grey-backed Tailorbird
- Grey-backed Thrush
- Grey-banded Mannikin
- Grey-barred Wren
- Grey-bellied Antbird
- Grey-bellied Bulbul
- Grey-bellied Comet
- Grey-bellied Cuckoo
- Grey-bellied Flowerpiercer
- Grey-bellied Hawk
- Grey-bellied Shrike-Tyrant
- Grey-bellied Spinetail
- Grey-bellied Tesia
- Grey-bellied Wren-Babbler
- Grey-breasted Babbler
- Grey-breasted Crake
- Grey-breasted Flycatcher
- Grey-breasted Martin
- Grey-breasted Mountain Toucan
- Grey-breasted Parakeet
- Grey-breasted Partridge
- Grey-breasted Prinia
- Grey-breasted Sabrewing
- Grey-breasted Seedsnipe
- Grey-breasted Spiderhunter
- Grey-breasted Spurfowl
- Grey-breasted Wood Wren
- Grey-breasted Woodpecker
- Grey-browed Brushfinch
- Grey-brown White-eye
- Grey-capped Cicadabird
- Grey-capped Cuckoo
- Grey-capped Flycatcher
- Grey-capped Greenfinch
- Grey-capped Hemispingus
- Grey-capped Pygmy Woodpecker
- Grey-capped Social Weaver
- Grey-capped Tyrannulet
- Grey-capped Warbler
- Grey-cheeked Bulbul
- Grey-cheeked Fulvetta
- Grey-cheeked Green Pigeon
- Grey-cheeked Nunlet
- Grey-cheeked Parakeet
- Grey-cheeked Thrush
- Grey-cheeked Tit-Babbler
- Grey-cheeked Warbler
- Grey-chested Babbler
- Grey-chested Dove
- Grey-chested Greenlet
- Grey-chested Jungle Flycatcher
- Grey-chinned Hermit
- Grey-chinned Minivet
- Grey-chinned Sunbird
- Grey-collared Becard
- Grey-collared Oriole
- Grey-cowled Wood Rail
- Grey-crested Cacholote
- Grey-crested Finch
- Grey-crested Helmetshrike
- Grey-crowned Babbler
- Grey-crowned Crocias
- Grey-crowned Flatbill
- Grey-crowned Mannikin
- Grey-crowned Prinia
- Grey-crowned Rosy Finch
- Grey-crowned Tanager
- Grey-crowned Tetraka
- Grey-crowned Warbler
- Grey-crowned Woodpecker
- Grey-crowned Yellowthroat
- Grey-eared Brushfinch
- Grey-eared Honeyeater
- Grey-eyed Bulbul
- Grey-eyed Greenlet
- Grey-faced Buzzard
- Grey-faced Petrel
- Grey-faced Tit-Babbler
- Grey-flanked Cinclodes
- Grey-fronted Dove
- Grey-fronted Green Pigeon
- Grey-fronted Honeyeater
- Grey-fronted Quail-Dove
- Grey-green Fruit Dove
- Grey-green Scrubwren
- Grey-headed Albatross
- Grey-headed Antbird
- Grey-headed Babbler
- Grey-headed Batis
- Grey-headed Bristlebill
- Grey-headed Broadbill
- Grey-headed Bulbul
- Grey-headed Bullfinch
- Grey-headed Bushshrike
- Grey-headed Canary-flycatcher
- Grey-headed Chachalaca
- Grey-headed Chickadee
- Grey-headed Cuckooshrike
- Grey-headed Dove
- Grey-headed Fish Eagle
- Grey-headed Fruit Dove
- Grey-headed Goshawk
- Grey-headed Greenbul
- Grey-headed Gull
- Grey-headed Honeyeater
- Grey-headed Imperial Pigeon
- Grey-headed Kingfisher
- Grey-headed Kite
- Grey-headed Lapwing
- Grey-headed Lovebird
- Grey-headed Mannikin
- Grey-headed Nigrita
- Grey-headed Oliveback
- Grey-headed Parakeet
- Grey-headed Parrotbill
- Grey-headed Piprites
- Grey-headed Robin
- Grey-headed Silverbill
- Grey-headed Spinetail
- Grey-headed Sunbird
- Grey-headed Swamphen
- Grey-headed Tanager
- Grey-headed Warbler
- Grey-headed Woodpecker
- Grey-hooded Attila
- Grey-hooded Bush Tanager
- Grey-hooded Flycatcher
- Grey-hooded Fulvetta
- Grey-hooded Parakeet
- Grey-hooded Parrotbill
- Grey-hooded Sierra Finch
- Grey-hooded Sunbird
- Grey-hooded Warbler
- Grey-hooded White-eye
- Greyish Baywing
- Greyish Eagle-Owl
- Greyish Miner
- Greyish Mourner
- Greyish Piculet
- Greyish Saltator
- Greylag Goose
- Grey-legged Tinamou
- Grey-lined Hawk
- Grey-mantled Wren
- Grey-naped Antpitta
- Grey-necked Bunting
- Grey-necked Rockfowl
- Grey-olive Greenbul
- Grey-rumped Swallow
- Grey-rumped Swift
- Grey-rumped Swiftlet
- Grey-rumped Treeswift
- Grey-sided Bush Warbler
- Grey-sided Flowerpecker
- Grey-sided Laughingthrush
- Grey-sided Scimitar Babbler
- Grey-sided Thrush
- Grey-streaked Flycatcher
- Grey-streaked Honeyeater
- Grey-striped Spurfowl
- Grey-tailed Mountaingem
- Grey-tailed Piha
- Grey-tailed Tattler
- Grey-throated Babbler
- Grey-throated Barbet
- Grey-throated Chat
- Grey-throated Leaftosser
- Grey-throated Martin
- Grey-throated Rail
- Grey-throated Sunbird
- Grey-throated Tit-Flycatcher
- Grey-throated Warbler
- Grey-throated Warbling Finch
- Grey-throated White-eye
- Grey-winged Blackbird
- Grey-winged Cotinga
- Grey-winged Francolin
- Grey-winged Inca Finch
- Grey-winged Robin-Chat
- Grey-winged Trumpeter
- Griffon Vulture
- Grimwood's Longclaw
- Groove-billed Ani
- Groove-billed Toucanet
- Grosbeak Starling
- Ground Cuckooshrike
- Ground Tit
- Ground Woodpecker
- Groundscraper Thrush
- Growling Riflebird
- Guadalcanal Dwarf Kingfisher
- Guadalcanal Honeyeater
- Guadalcanal Thrush
- Guadalupe Caracara
- Guadalupe Junco
- Guadalupe Murrelet
- Guadalupe Storm Petrel
- Guadeloupe Woodpecker
- Guaiabero
- Guaiquinima Whitestart
- Guam Flycatcher
- Guam Kingfisher
- Guam Rail
- Guanay Cormorant
- Guatemalan Pygmy Owl
- Guatemalan Tyrannulet
- Guayaquil Woodpecker
- Guianan Cock-of-the-rock
- Guianan Gnatcatcher
- Guianan Puffbird
- Guianan Red Cotinga
- Guianan Schiffornis
- Guianan Streaked Antwren
- Guianan Toucanet
- Guianan Trogon
- Guianan Tyrannulet
- Guianan Warbling Antbird
- Guianan Woodcreeper
- Guinea Turaco
- Guira Cuckoo
- Guira Tanager
- Güldenstädt's Redstart
- Gull-billed Tern
- Gundlach's Hawk
- Gunnison Grouse
- Gurney's Eagle
- Gurney's Pitta
- Gurney's Sugarbird
- Guttulate Foliage-gleaner
- Gyrfalcon
- Hadada Ibis
- Hainan Blue Flycatcher
- Hainan Leaf Warbler
- Hainan Partridge
- Hainan Peacock-Pheasant
- Hair-crested Drongo
- Hairy Woodpecker
- Hairy-backed Bulbul
- Hairy-breasted Barbet
- Hairy-crested Antbird
- Half-collared Kingfisher
- Half-collared Sparrow
- Hall's Babbler
- Halmahera Boobook
- Halmahera Cuckooshrike
- Halmahera Flowerpecker
- Halmahera Swiftlet
- Hamerkop
- Hammond's Flycatcher
- Handsome Flycatcher
- Handsome Fruiteater
- Handsome Spurfowl
- Handsome Sunbird
- Hangnest Tody-Tyrant
- Happy Wren
- Hardhead
- Harlequin Antbird
- Harlequin Duck
- Harlequin Quail
- Harpy Eagle
- Harris's Hawk
- Harris's Sparrow
- Hartert's Camaroptera
- Hartert's Leaf Warbler
- Hartlaub's Babbler
- Hartlaub's Bustard
- Hartlaub's Duck
- Hartlaub's Gull
- Hartlaub's Spurfowl
- Hartlaub's Turaco
- Harwood's Spurfowl
- Hauxwell's Thrush
- Hawaii Akepa
- Hawaii Amakihi
- Hawaii Creeper
- Hawaii Elepaio
- Hawaii Mamo
- Hawaii Oo
- Hawaiian Coot
- Hawaiian Crow
- Hawaiian Duck
- Hawaiian Hawk
- Hawaiian Petrel
- Hawaiian Rail
- Hawfinch
- Hawkins's Rail
- Hazel Grouse
- Hazel-fronted Pygmy Tyrant
- Heard Island Shag
- Heart-spotted Woodpecker
- Heermann's Gull
- Heinroth's Shearwater
- Hellmayr's Pipit
- Helmet Vanga
- Helmeted Curassow
- Helmeted Friarbird
- Helmeted Guineafowl
- Helmeted Hornbill
- Helmeted Manakin
- Helmeted Myna
- Helmeted Pygmy Tyrant
- Helmeted Woodpecker
- Hemprich's Hornbill
- Hen Harrier
- Henderson Crake
- Henderson Fruit Dove
- Henderson Petrel
- Henderson Reed Warbler
- Henderson's Ground Jay
- Henna-capped Foliage-gleaner
- Henna-hooded Foliage-gleaner
- Henslow's Sparrow
- Henst's Goshawk
- Hepatic Tanager
- Herald Petrel
- Herero Chat
- Hermit Thrush
- Hermit Warbler
- Hermit Wood Wren
- Heuglin's Bustard
- Heuglin's Masked Weaver
- Heuglin's Spurfowl
- Heuglin's Wheatear
- Heuglin's White-eye
- Highland Elaenia
- Highland Guan
- Highland Rush Warbler
- Highland Tinamou
- Hildebrandt's Spurfowl
- Hildebrandt's Starling
- Hill Blue Flycatcher
- Hill Partridge
- Hill Pigeon
- Hill Prinia
- Hill Swallow
- Himalayan Beautiful Rosefinch
- Himalayan Black-lored Tit
- Himalayan Bluetail
- Himalayan Bulbul
- Himalayan Buzzard
- Himalayan Cuckoo
- Himalayan Cutia
- Himalayan Flameback
- Himalayan Monal
- Himalayan Owl
- Himalayan Prinia
- Himalayan Quail
- Himalayan Rubythroat
- Himalayan Shortwing
- Himalayan Shrike-babbler
- Himalayan Snowcock
- Himalayan Swiftlet
- Himalayan Thrush
- Himalayan Vulture
- Himalayan White-browed Rosefinch
- Himalayan Woodpecker
- Hinde's Babbler
- Hispaniolan Amazon
- Hispaniolan Crossbill
- Hispaniolan Emerald
- Hispaniolan Lizard Cuckoo
- Hispaniolan Nightjar
- Hispaniolan Oriole
- Hispaniolan Palm Crow
- Hispaniolan Parakeet
- Hispaniolan Pewee
- Hispaniolan Spindalis
- Hispaniolan Trogon
- Hispaniolan Woodpecker
- Hoary Puffleg
- Hoary-headed Grebe
- Hoary-throated Barwing
- Hoary-throated Spinetail
- Hoatzin
- Hodgson's Frogmouth
- Hodgson's Hawk-Cuckoo
- Hodgson's Redstart
- Hodgson's Treecreeper
- Hoffmann's Woodpecker
- Hoffmanns's Woodcreeper
- Hofmann's Sunbird
- Holub's Golden Weaver
- Hombron's Kingfisher
- Honduran Emerald
- Honeyguide Greenbul
- Hooded Antpitta
- Hooded Berryeater
- Hooded Butcherbird
- Hooded Crane
- Hooded Crow
- Hooded Cuckooshrike
- Hooded Dotterel
- Hooded Gnateater
- Hooded Grebe
- Hooded Grosbeak
- Hooded Mannikin
- Hooded Merganser
- Hooded Monarch
- Hooded Mountain Tanager
- Hooded Mountain Toucan
- Hooded Oriole
- Hooded Parrot
- Hooded Pitohui
- Hooded Pitta
- Hooded Robin
- Hooded Siskin
- Hooded Tanager
- Hooded Tinamou
- Hooded Treepie
- Hooded Visorbearer
- Hooded Vulture
- Hooded Warbler
- Hooded Wheatear
- Hooded Whistler
- Hooded Yellowthroat
- Hook-billed Bulbul
- Hook-billed Hermit
- Hook-billed Kingfisher
- Hook-billed Kite
- Hook-billed Vanga
- Hoopoe Starling
- Hornbill Friarbird
- Hornby's Storm Petrel
- Horned Coot
- Horned Curassow
- Horned Grebe
- Horned Guan
- Horned Lark
- Horned Parakeet
- Horned Puffin
- Horned Screamer
- Horned Sungem
- Horsfield's Babbler
- Horsfield's Bronze Cuckoo
- Horsfield's Bush Lark
- Horus Swift
- Hose's Broadbill
- Hose's Partridge
- Hottentot Buttonquail
- Hottentot Teal
- Houbara Bustard
- House Bunting
- House Crow
- House Finch
- House Sparrow
- House Swift
- House Wren
- Huallaga Tanager
- Huayco Tinamou
- Hudsonian Godwit
- Hudsonian Whimbrel
- Hudson's Black Tyrant
- Hudson's Canastero
- Huet's Fulvetta
- Huia
- Humaita Antbird
- Humblot's Flycatcher
- Humblot's Heron
- Humblot's Sunbird
- Humboldt Penguin
- Humboldt's Sapphire
- Hume's Bush Warbler
- Hume's Hawk-Owl
- Hume's Leaf Warbler
- Hume's Short-toed Lark
- Hume's Treecreeper
- Hume's Wheatear
- Hume's White-eye
- Hume's Whitethroat
- Hunstein's Mannikin
- Hunter's Cisticola
- Hunter's Sunbird
- Huon Astrapia
- Huon Catbird
- Huon Melidectes
- Hutton's Shearwater
- Hutton's Vireo
- Hyacinth Macaw
- Hyacinth Visorbearer
- Hylocitrea
- Iago Sparrow
- Ibadan Malimbe
- Iberian Chiffchaff
- Iberian Green Woodpecker
- Iberian Grey Shrike
- Iberian Magpie
- Ibisbill
- Iceland Gull
- Icterine Greenbul
- Icterine Warbler
- Ihering's Antwren
- Iiwi
- Ijima's Leaf Warbler
- Imeri Warbling Antbird
- Imitator Goshawk
- Imperial Amazon
- Imperial Shag
- Imperial Snipe
- Imperial Woodpecker
- Inaccessible Island Finch
- Inaccessible Island Rail
- Inagua Woodstar
- Inambari Gnatcatcher
- Inambari Woodcreeper
- Inca Dove
- Inca Flycatcher
- Inca Jay
- Inca Tern
- Inca Wren
- Indian Blackbird
- Indian Black-lored Tit
- Indian Blue Robin
- Indian Bush Lark
- Indian Cormorant
- Indian Courser
- Indian Cuckoo
- Indian Eagle-Owl
- Indian Golden Oriole
- Indian Grassbird
- Indian Grey Hornbill
- Indian Jungle Crow
- Indian Nightjar
- Indian Nuthatch
- Indian Paradise Flycatcher
- Indian Peafowl
- Indian Pitta
- Indian Pond Heron
- Indian Robin
- Indian Roller
- Indian Scimitar Babbler
- Indian Scops Owl
- Indian Silverbill
- Indian Skimmer
- Indian Spot-billed Duck
- Indian Spotted Creeper
- Indian Spotted Eagle
- Indian Stone-curlew
- Indian Swiftlet
- Indian Vulture
- Indian White-eye
- Indian Yellow-nosed Albatross
- Indigo Bunting
- Indigo Flowerpiercer
- Indigo Flycatcher
- Indigo-banded Kingfisher
- Indigo-capped Hummingbird
- Indochinese Barbet
- Indochinese Blue Flycatcher
- Indochinese Bush Lark
- Indochinese Cuckooshrike
- Indochinese Fulvetta
- Indochinese Green Magpie
- Indochinese Roller
- Indochinese Yuhina
- Indonesian Honeyeater
- Inland Dotterel
- Inland Thornbill
- Intermediate Egret
- Invisible Rail
- Iphis Monarch
- Iquitos Gnatcatcher
- Iraq Babbler
- Iringa Akalat
- Iriomote Tit
- Iris Lorikeet
- Isabela Oriole
- Isabelline Bush-hen
- Isabelline Shrike
- Isabelline Wheatear
- Island Bronze-naped Pigeon
- Island Collared Dove
- Island Imperial Pigeon
- Island Leaf Warbler
- Island Monarch
- Island Scrub Jay
- Island Swiftlet
- Island Thrush
- Island Whistler
- Islet Kingfisher
- Isthmian Wren
- Italian Sparrow
- Itatiaia Spinetail
- Itombwe Flycatcher
- Ituri Batis
- Ivory Gull
- Ivory-backed Woodswallow
- Ivory-billed Aracari
- Ivory-billed Coucal
- Ivory-billed Woodcreeper
- Ivory-billed Woodpecker
- Ivory-breasted Pitta
- Izu Thrush
- Jabiru
- Jack Snipe
- Jackal Buzzard
- Jackson's Hornbill
- Jackson's Spurfowl
- Jackson's Widowbird
- Jacky Winter
- Jacobin Cuckoo
- Jamaican Becard
- Jamaican Blackbird
- Jamaican Crow
- Jamaican Elaenia
- Jamaican Euphonia
- Jamaican Lizard Cuckoo
- Jamaican Mango
- Jamaican Oriole
- Jamaican Owl
- Jamaican Petrel
- Jamaican Pewee
- Jamaican Poorwill
- Jamaican Spindalis
- Jamaican Tody
- Jamaican Vireo
- Jamaican Woodpecker
- Jambandu Indigobird
- Jambu Fruit Dove
- Jameson's Antpecker
- Jameson's Firefinch
- Jameson's Snipe
- Jameson's Wattle-eye
- James's Flamingo
- Jandaya Parakeet
- Jankowski's Bunting
- Japanese Accentor
- Japanese Bush Warbler
- Japanese Cormorant
- Japanese Green Woodpecker
- Japanese Grosbeak
- Japanese Leaf Warbler
- Japanese Murrelet
- Japanese Night Heron
- Japanese Paradise Flycatcher
- Japanese Pygmy Woodpecker
- Japanese Quail
- Japanese Reed Bunting
- Japanese Robin
- Japanese Scops Owl
- Japanese Sparrowhawk
- Japanese Thrush
- Japanese Tit
- Japanese Wagtail
- Japanese Waxwing
- Japanese Wood Pigeon
- Java Sparrow
- Javan Banded Pitta
- Javan Blue Flycatcher
- Javan Bush Warbler
- Javan Cochoa
- Javan Cuckooshrike
- Javan Flameback
- Javan Frogmouth
- Javan Fulvetta
- Javan Green Magpie
- Javan Hawk-Eagle
- Javan Kingfisher
- Javan Lapwing
- Javan Munia
- Javan Myna
- Javan Owlet
- Javan Plover
- Javan Pond Heron
- Javan Scops Owl
- Javan Sunbird
- Javan Tesia
- Javan Trogon
- Javan Whistling Thrush
- Javan White-eye
- Javan Woodcock
- Jelski's Black Tyrant
- Jelski's Chat-Tyrant
- Jerdon's Babbler
- Jerdon's Baza
- Jerdon's Bush Chat
- Jerdon's Bush Lark
- Jerdon's Courser
- Jerdon's Leafbird
- Jerdon's Minivet
- Jerdon's Nightjar
- Jet Antbird
- Jet Manakin
- Jobi Manucode
- Jocotoco Antpitta
- Johanna's Sunbird
- Johannes's Tody-Tyrant
- Jonquil Parrot
- Jos Plateau Indigobird
- Josephine's Lorikeet
- Jouanin's Petrel
- Joyful Greenbul
- Juan Fernandez Firecrown
- Juan Fernandez Petrel
- Juan Fernandez Tit-Tyrant
- Juba Weaver
- Jungle Babbler
- Jungle Bush Quail
- Jungle Myna
- Jungle Nightjar
- Jungle Owlet
- Jungle Prinia
- Junin Canastero
- Junin Grebe
- Junin Tapaculo
- Juniper Titmouse
- Kabobo Apalis
- Kadavu Fantail
- Kadavu Honeyeater
- Kaempfer's Tody-Tyrant
- Kaempfer's Woodpecker
- Kagu
- Kai Cicadabird
- Kakamega Greenbul
- Kakapo
- Kakawahie
- Kalahari Scrub Robin
- Kalij Pheasant
- Kalinowski's Chat-Tyrant
- Kalkadoon Grasswren
- Kamao
- Kamchatka Leaf Warbler
- Kandt's Waxbill
- Karamoja Apalis
- Karoo Chat
- Karoo Eremomela
- Karoo Korhaan
- Karoo Lark
- Karoo Long-billed Lark
- Karoo Prinia
- Karoo Scrub Robin
- Karoo Thrush
- Karthala Scops Owl
- Karthala White-eye
- Kashmir Flycatcher
- Kashmir Nuthatch
- Katanga Masked Weaver
- Kauai Akialoa
- Kauai Amakihi
- Kauai Elepaio
- Kauai Nukupuu
- Kauai Oo
- Kawall's Amazon
- Kea
- Keel-billed Motmot
- Keel-billed Toucan
- Kelp Goose
- Kelp Gull
- Kemp's Longbill
- Kenrick's Starling
- Kentish Plover
- Kentucky Warbler
- Kenya Sparrow
- Kerguelen Petrel
- Kerguelen Shag
- Kerguelen Tern
- Kermadec Petrel
- Kessler's Thrush
- Key West Quail-Dove
- Kikau
- Kikuyu White-eye
- Killdeer
- Kilombero Weaver
- Kimberley Honeyeater
- King Bird-of-paradise
- King Eider
- King of Saxony Bird-of-paradise
- King Penguin
- King Quail
- King Rail
- King Vulture
- Kinglet Calyptura
- Kinglet Manakin
- Kioea
- Kipengere Seedeater
- Kiritimati Sandpiper
- Kirk's White-eye
- Kirtland's Warbler
- Kittlitz's Murrelet
- Kittlitz's Plover
- Klaas's Cuckoo
- Klages's Antbird
- Klages's Antwren
- Kloss's Leaf Warbler
- Knobbed Hornbill
- Knob-billed Duck
- Knob-billed Fruit Dove
- Knysna Turaco
- Knysna Warbler
- Knysna Woodpecker
- Koepcke's Hermit
- Koepcke's Screech Owl
- Kofiau Monarch
- Kofiau Paradise Kingfisher
- Koklass Pheasant
- Kolombangara Leaf Warbler
- Kolombangara Monarch
- Kolombangara White-eye
- Kona Grosbeak
- Kordofan Lark
- Kordofan Sparrow
- Kori Bustard
- Kosrae Crake
- Kosrae Fruit Dove
- Kosrae Starling
- Kosrae White-eye
- Kozlov's Accentor
- Kretschmer's Longbill
- Krüper's Nuthatch
- Kuhl's Lorikeet
- Kungwe Apalis
- Kurdish Wheatear
- Kurrichane Thrush
- La Sagra's Flycatcher
- La Selle Thrush
- Labrador Duck
- Laced Woodpecker
- Lacrimose Mountain Tanager
- Ladder-backed Woodpecker
- Ladder-tailed Nightjar
- Lady Amherst's Pheasant
- Lafresnaye's Piculet
- Lafresnaye's Vanga
- Lagden's Bushshrike
- Laggar Falcon
- Lake Duck
- Lanai Hookbill
- Lanceolated Monklet
- Lanceolated Warbler
- Lance-tailed Manakin
- Landana Firefinch
- Lanner Falcon
- Lapland Longspur
- Lappet-faced Vulture
- Large Blue Flycatcher
- Large Cuckooshrike
- Large Elaenia
- Large Fig Parrot
- Large Frogmouth
- Large Green Pigeon
- Large Grey Babbler
- Large Ground Finch
- Large Hawk-Cuckoo
- Large Lifou White-eye
- Large Niltava
- Large Scimitar Babbler
- Large Scrubwren
- Large Tree Finch
- Large Woodshrike
- Large Wren-Babbler
- Large-billed Antwren
- Large-billed Crow
- Large-billed Gerygone
- Large-billed Lark
- Large-billed Leaf Warbler
- Large-billed Parrotlet
- Large-billed Reed Warbler
- Large-billed Scrubwren
- Large-billed Seed Finch
- Large-billed Tern
- Large-footed Finch
- Large-footed Tapaculo
- Large-headed Flatbill
- Large-spotted Nutcracker
- Large-tailed Antshrike
- Large-tailed Nightjar
- Lark Bunting
- Lark Sparrow
- Lark-like Brushrunner
- Lark-like Bunting
- Latham's Francolin
- Latham's Snipe
- Lattice-tailed Trogon
- Laughing Dove
- Laughing Falcon
- Laughing Gull
- Laughing Kookaburra
- Laughing Owl
- Laura's Woodland Warbler
- Laurel Pigeon
- Lava Gull
- Lava Heron
- Lavender Waxbill
- Lawes's Parotia
- Lawrence's Goldfinch
- Lawrence's Thrush
- Layard's Parakeet
- Layard's Warbler
- Layard's Woodcreeper
- Laysan Albatross
- Laysan Duck
- Laysan Finch
- Laysan Honeycreeper
- Laysan Rail
- Lazuli Bunting
- Lazuli Kingfisher
- Lazuline Sabrewing
- Lazy Cisticola
- Leach's Storm Petrel
- Leaden Antwren
- Leaden Flycatcher
- Leaden Honeyeater
- Leaf Lorikeet
- Lear's Macaw
- Least Auklet
- Least Bittern
- Least Flycatcher
- Least Grebe
- Least Honeyguide
- Least Nighthawk
- Least Poorwill
- Least Sandpiper
- Least Seedsnipe
- Least Storm Petrel
- Least Tern
- LeConte's Sparrow
- LeConte's Thrasher
- Legge's Flowerpecker
- Legge's Hawk-Eagle
- Lemon Dove
- Lemon-bellied Crombec
- Lemon-bellied Flyrobin
- Lemon-bellied White-eye
- Lemon-breasted Canary
- Lemon-browed Flycatcher
- Lemon-chested Greenlet
- Lemon-rumped Tanager
- Lemon-rumped Warbler
- Lemon-spectacled Tanager
- Lemon-throated Barbet
- Lemon-throated Leaf Warbler
- Lesser Adjutant
- Lesser Akialoa
- Lesser Antillean Bullfinch
- Lesser Antillean Flycatcher
- Lesser Antillean Pewee
- Lesser Antillean Saltator
- Lesser Antillean Swift
- Lesser Antillean Tanager
- Lesser Bird-of-paradise
- Lesser Black-backed Gull
- Lesser Blue-eared Starling
- Lesser Coucal
- Lesser Crested Tern
- Lesser Cuckoo
- Lesser Cuckooshrike
- Lesser Elaenia
- Lesser Fish Eagle
- Lesser Flamingo
- Lesser Florican
- Lesser Frigatebird
- Lesser Goldfinch
- Lesser Grass Finch
- Lesser Green Leafbird
- Lesser Greenlet
- Lesser Grey Shrike
- Lesser Ground Cuckoo
- Lesser Ground Robin
- Lesser Honeyguide
- Lesser Hoopoe-Lark
- Lesser Horned Owl
- Lesser Hornero
- Lesser Jacana
- Lesser Kestrel
- Lesser Kiskadee
- Lesser Koa Finch
- Lesser Lophorina
- Lesser Masked Weaver
- Lesser Melampitta
- Lesser Moorhen
- Lesser Necklaced Laughingthrush
- Lesser Nighthawk
- Lesser Noddy
- Lesser Nothura
- Lesser Prairie Chicken
- Lesser Racket-tailed Drongo
- Lesser Redpoll
- Lesser Rhea
- Lesser Roadrunner
- Lesser Sand Plover
- Lesser Scaup
- Lesser Seedcracker
- Lesser Short-toed Lark
- Lesser Shortwing
- Lesser Shrike-Tyrant
- Lesser Sooty Owl
- Lesser Spotted Eagle
- Lesser Spotted Woodpecker
- Lesser Striped Swallow
- Lesser Swallow-tailed Swift
- Lesser Swamp Warbler
- Lesser Vasa Parrot
- Lesser Violetear
- Lesser Wagtail-Tyrant
- Lesser Whistling Duck
- Lesser White-fronted Goose
- Lesser Whitethroat
- Lesser Woodcreeper
- Lesser Yellow-headed Vulture
- Lesser Yellowlegs
- Lesser Yellownape
- Lesson's Motmot
- Lesson's Seedeater
- Letitia's Thorntail
- Lettered Aracari
- Letter-winged Kite
- Levaillant's Cisticola
- Levaillant's Cuckoo
- Levaillant's Woodpecker
- Levant Sparrowhawk
- Lewin's Honeyeater
- Lewin's Rail
- Lewis's Woodpecker
- Lichtenstein's Sandgrouse
- Lidth's Jay
- Light-crowned Spinetail
- Light-mantled Albatross
- Light-vented Bulbul
- Lilac Kingfisher
- Lilac-breasted Roller
- Lilac-crowned Amazon
- Lilac-crowned Fruit Dove
- Lilac-tailed Parrotlet
- Lilian's Lovebird
- Limestone Leaf Warbler
- Limestone Wren-Babbler
- Limpkin
- Lina's Sunbird
- Lincoln's Sparrow
- Lineated Barbet
- Lineated Foliage-gleaner
- Lineated Woodpecker
- Line-cheeked Spinetail
- Lined Antshrike
- Lined Forest Falcon
- Lined Quail-Dove
- Lined Seedeater
- Line-fronted Canastero
- Lita Woodpecker
- Little Auk
- Little Bee-eater
- Little Bittern
- Little Black Cormorant
- Little Blue Heron
- Little Bronze Cuckoo
- Little Brown Bustard
- Little Bunting
- Little Bustard
- Little Buttonquail
- Little Chachalaca
- Little Corella
- Little Cormorant
- Little Crake
- Little Crow
- Little Cuckoo
- Little Cuckoo-Dove
- Little Curlew
- Little Eagle
- Little Egret
- Little Forktail
- Little Friarbird
- Little Grassbird
- Little Grebe
- Little Green Pigeon
- Little Green Sunbird
- Little Green Woodpecker
- Little Greenbul
- Little Grey Flycatcher
- Little Grey Greenbul
- Little Grey Woodpecker
- Little Ground Tyrant
- Little Gull
- Little Hermit
- Little Inca Finch
- Little Kingfisher
- Little Lorikeet
- Little Minivet
- Little Nightjar
- Little Owl
- Little Paradise Kingfisher
- Little Penguin
- Little Pied Cormorant
- Little Pied Flycatcher
- Little Raven
- Little Ringed Plover
- Little Rock Thrush
- Little Rush Warbler
- Little Shearwater
- Little Slaty Flycatcher
- Little Sparrowhawk
- Little Spiderhunter
- Little Spotted Kiwi
- Little Stint
- Little Sumba Hawk-Owl
- Little Swift
- Little Tern
- Little Thornbird
- Little Tinamou
- Little Wattlebird
- Little Weaver
- Little Wood Rail
- Little Woodpecker
- Little Woodstar
- Little Woodswallow
- Little Yellow Flycatcher
- Littoral Rock Thrush
- Livingstone's Flycatcher
- Livingstone's Turaco
- Lizard Buzzard
- Loango Weaver
- Locust Finch
- Loggerhead Kingbird
- Loggerhead Shrike
- Loja Tyrannulet
- Lompobattang Flycatcher
- Long-bearded Honeyeater
- Long-billed Bernieria
- Long-billed Bush Warbler
- Long-billed Corella
- Long-billed Crombec
- Long-billed Crow
- Long-billed Cuckoo
- Long-billed Curlew
- Long-billed Dowitcher
- Long-billed Forest Warbler
- Long-billed Hermit
- Long-billed Honeyeater
- Long-billed Murrelet
- Long-billed Partridge
- Long-billed Pipit
- Long-billed Plover
- Long-billed Spiderhunter
- Long-billed Starthroat
- Long-billed Thrasher
- Long-billed Thrush
- Long-billed White-eye
- Long-billed Woodcreeper
- Long-billed Wren
- Long-billed Wren-Babbler
- Long-crested Eagle
- Long-crested Myna
- Long-crested Pygmy Tyrant
- Long-eared Owl
- Long-legged Buzzard
- Long-legged Pipit
- Long-legged Thicketbird
- Long-tailed Broadbill
- Long-tailed Bush Warbler
- Long-tailed Cinclodes
- Long-tailed Cisticola
- Long-tailed Duck
- Long-tailed Fantail
- Long-tailed Finch
- Long-tailed Fiscal
- Long-tailed Glossy Starling
- Long-tailed Ground Dove
- Long-tailed Ground Roller
- Long-tailed Hawk
- Long-tailed Hermit
- Long-tailed Honey Buzzard
- Long-tailed Jaeger
- Long-tailed Manakin
- Long-tailed Meadowlark
- Long-tailed Minivet
- Long-tailed Mockingbird
- Long-tailed Myna
- Long-tailed Nightjar
- Long-tailed Paradigalla
- Long-tailed Paradise Whydah
- Long-tailed Parakeet
- Long-tailed Potoo
- Long-tailed Reed Finch
- Long-tailed Rosefinch
- Long-tailed Sabrewing
- Long-tailed Shrike
- Long-tailed Sibia
- Long-tailed Silky-flycatcher
- Long-tailed Starling
- Long-tailed Sylph
- Long-tailed Tapaculo
- Long-tailed Thrush
- Long-tailed Tit
- Long-tailed Triller
- Long-tailed Tyrant
- Long-tailed Widowbird
- Long-tailed Wood Partridge
- Long-tailed Woodcreeper
- Long-tailed Woodnymph
- Long-toed Lapwing
- Long-toed Stint
- Long-trained Nightjar
- Long-tufted Screech Owl
- Longuemare's Sunangel
- Long-wattled Umbrellabird
- Long-whiskered Owlet
- Long-winged Antwren
- Long-winged Harrier
- Lord Derby's Parakeet
- Lord Howe Gerygone
- Lord Howe Parakeet
- Lord Howe Woodhen
- Lorentz's Whistler
- Loria's Satinbird
- Loten's Sunbird
- Louisiade Flowerpecker
- Louisiade Pitta
- Louisiade Whistler
- Louisiade White-eye
- Louisiana Waterthrush
- Lovely Cotinga
- Lovely Fairywren
- Lovely Sunbird
- Loveridge's Sunbird
- Lowland Akalat
- Lowland Masked Apalis
- Lowland Peltops
- Lowland Sooty Boubou
- Lowland Tiny Greenbul
- Lowland White-eye
- Luapula Cisticola
- Lucifer Sheartail
- Lucy's Warbler
- Ludwig's Bustard
- Ludwig's Double-collared Sunbird
- Lufira Masked Weaver
- Lühder's Bushshrike
- Lulu's Tody-Flycatcher
- Lunulated Antbird
- Luzon Bleeding-heart
- Luzon Flameback
- Luzon Hawk-Owl
- Luzon Hornbill
- Luzon Scops Owl
- Luzon Striped Babbler
- Luzon Sunbird
- Luzon Water Redstart
- Lyall's Wren
- Lynes's Cisticola
- Lyre-tailed Honeyguide
- Lyre-tailed Nightjar
- Macaroni Penguin
- Maccoa Duck
- MacGillivray's Warbler
- MacGregor's Bowerbird
- MacGregor's Honeyeater
- MacKinlay's Cuckoo-Dove
- Mackinnon's Shrike
- Macleay's Honeyeater
- Macquarie Parakeet
- Macquarie Shag
- Macqueen's Bustard
- Madagascan Blue Pigeon
- Madagascan Buttonquail
- Madagascan Buzzard
- Madagascan Cisticola
- Madagascan Cuckoo
- Madagascan Cuckoo-Hawk
- Madagascan Cuckooshrike
- Madagascan Fish Eagle
- Madagascan Flufftail
- Madagascan Grebe
- Madagascan Green Pigeon
- Madagascan Harrier-Hawk
- Madagascan Hoopoe
- Madagascan Ibis
- Madagascan Jacana
- Madagascan Lark
- Madagascan Magpie-Robin
- Madagascan Mannikin
- Madagascan Nightjar
- Madagascan Owl
- Madagascan Partridge
- Madagascan Plover
- Madagascan Pochard
- Madagascan Pratincole
- Madagascan Pygmy Kingfisher
- Madagascan Rail
- Madagascan Sandgrouse
- Madagascan Serpent Eagle
- Madagascan Snipe
- Madagascan Sparrowhawk
- Madagascan Spinetail
- Madagascan Starling
- Madagascan Stonechat
- Madagascan Swamp Warbler
- Madagascan Wagtail
- Madagascan Wood Rail
- Madagascan Yellowbrow
- Madanga
- Madarasz's Tiger Parrot
- Madeira Firecrest
- Magdalena Antbird
- Magdalena Tapaculo
- Magellanic Diving Petrel
- Magellanic Oystercatcher
- Magellanic Penguin
- Magellanic Plover
- Magellanic Tapaculo
- Magellanic Woodpecker
- Magenta Petrel
- Magenta-throated Woodstar
- Maghreb Lark
- Maghreb Magpie
- Maghreb Owl
- Magnificent Bird-of-paradise
- Magnificent Frigatebird
- Magnificent Riflebird
- Magnificent Sunbird
- Magnolia Warbler
- Magpie Goose
- Magpie Mannikin
- Magpie Shrike
- Magpie Starling
- Magpie Tanager
- Magpie-lark
- Maguari Stork
- Major Mitchell's Cockatoo
- Makatea Fruit Dove
- Makira Cicadabird
- Makira Dwarf Kingfisher
- Makira Fantail
- Makira Flycatcher
- Makira Honeyeater
- Makira Leaf Warbler
- Makira Starling
- Makira Thrush
- Makira Woodhen
- Malabar Barbet
- Malabar Grey Hornbill
- Malabar Lark
- Malabar Pied Hornbill
- Malabar Starling
- Malabar Trogon
- Malabar Whistling Thrush
- Malabar Woodshrike
- Malachite Kingfisher
- Malachite Sunbird
- Malagasy Black Swift
- Malagasy Brush Warbler
- Malagasy Bulbul
- Malagasy Coucal
- Malagasy Green Sunbird
- Malagasy Harrier
- Malagasy Kestrel
- Malagasy Kingfisher
- Malagasy Palm Swift
- Malagasy Paradise Flycatcher
- Malagasy Pond Heron
- Malagasy Sacred Ibis
- Malagasy Turtle Dove
- Malagasy White-eye
- Malaita Dwarf Kingfisher
- Malaita Fantail
- Malaita White-eye
- Malayan Banded Pitta
- Malayan Laughingthrush
- Malayan Night Heron
- Malayan Peacock-Pheasant
- Malayan Whistling Thrush
- Malaysian Blue Flycatcher
- Malaysian Crested Argus
- Malaysian Eared Nightjar
- Malaysian Hawk-Cuckoo
- Malaysian Honeyguide
- Malaysian Partridge
- Malaysian Pied Fantail
- Malaysian Plover
- Maleo
- Malherbe's Parakeet
- Mali Firefinch
- Malia
- Malindi Pipit
- Mallard
- Mallee Emu-wren
- Malleefowl
- Mamberamo Shrikethrush
- Manchurian Bush Warbler
- Manchurian Reed Warbler
- Mandarin Duck
- Maned Duck
- Maned Owl
- Mangareva Kingfisher
- Mangareva Reed Warbler
- Mangrove Blue Flycatcher
- Mangrove Cuckoo
- Mangrove Fantail
- Mangrove Finch
- Mangrove Gerygone
- Mangrove Golden Whistler
- Mangrove Honeyeater
- Mangrove Hummingbird
- Mangrove Kingfisher
- Mangrove Pitta
- Mangrove Rail
- Mangrove Robin
- Mangrove Sunbird
- Mangrove Swallow
- Mangrove Vireo
- Mangrove Warbler
- Mangrove Whistler
- Manicore Warbling Antbird
- Manipur Bush Quail
- Manipur Fulvetta
- Mantanani Scops Owl
- Mantled Hawk
- Manu Antbird
- Manu Parrotlet
- Manus Boobook
- Manus Cuckooshrike
- Manus Dwarf Kingfisher
- Manus Fantail
- Manus Friarbird
- Manus Masked Owl
- Manus Monarch
- Manx Shearwater
- Many-banded Aracari
- Many-colored Bushshrike
- Many-colored Chaco Finch
- Many-colored Fruit Dove
- Many-colored Rush Tyrant
- Many-spotted Hummingbird
- Many-striped Canastero
- Mao
- Maquis Canastero
- Marabou Stork
- Maracaibo Tody-Flycatcher
- Marail Guan
- Maranon Crescentchest
- Maranon Pigeon
- Maranon Spinetail
- Maranon Thrush
- Marbled Duck
- Marbled Frogmouth
- Marbled Godwit
- Marbled Honeyeater
- Marbled Murrelet
- Marbled Wood Quail
- Marbled Wren-Babbler
- Marble-faced Bristle Tyrant
- Marcapata Spinetail
- Margaret's Batis
- Mariana Crow
- Mariana Fruit Dove
- Mariana Kingfisher
- Mariana Swiftlet
- Marianne White-eye
- Marico Flycatcher
- Marico Sunbird
- Marigold Lorikeet
- Markham's Storm Petrel
- Marmora's Warbler
- Maroon Oriole
- Maroon Shining Parrot
- Maroon Woodpecker
- Maroon-backed Accentor
- Maroon-backed Whistler
- Maroon-bellied Parakeet
- Maroon-belted Chat-Tyrant
- Maroon-breasted Philentoma
- Maroon-chested Ground Dove
- Maroon-fronted Parrot
- Maroon-naped Sunbird
- Maroon-tailed Parakeet
- Marquesan Ground Dove
- Marquesan Imperial Pigeon
- Marquesan Kingfisher
- Marquesan Monarch
- Marquesan Swiftlet
- Marsh Antwren
- Marsh Babbler
- Marsh Grassbird
- Marsh Owl
- Marsh Sandpiper
- Marsh Seedeater
- Marsh Tapaculo
- Marsh Tchagra
- Marsh Tit
- Marsh Warbler
- Marsh Widowbird
- Marsh Wren
- Marshall's Iora
- Martens's Warbler
- Martial Eagle
- Martinique Oriole
- Marvelous Spatuletail
- Masafuera Rayadito
- Mascarene Coot
- Mascarene Grey Parakeet
- Mascarene Martin
- Mascarene Paradise Flycatcher
- Mascarene Parrot
- Mascarene Petrel
- Mascarene Swiftlet
- Mascarene Teal
- Masked Antpitta
- Masked Booby
- Masked Bowerbird
- Masked Cardinal
- Masked Crimson Tanager
- Masked Duck
- Masked Finch
- Masked Finfoot
- Masked Flowerpiercer
- Masked Fruiteater
- Masked Gnatcatcher
- Masked Lapwing
- Masked Lark
- Masked Laughingthrush
- Masked Mountain Tanager
- Masked Saltator
- Masked Shining Parrot
- Masked Shrike
- Masked Tanager
- Masked Tityra
- Masked Trogon
- Masked Water Tyrant
- Masked Woodswallow
- Masked Yellowthroat
- Matinan Blue Flycatcher
- Mato Grosso Antbird
- Mato Grosso Swift
- Matsudaira's Storm Petrel
- Maui Akepa
- Maui Alauahio
- Maui Nukupuu
- Maui Parrotbill
- Maui-nui Akialoa
- Mauke Starling
- Maupiti Monarch
- Mauritius Blue Pigeon
- Mauritius Bulbul
- Mauritius Cuckooshrike
- Mauritius Fody
- Mauritius Grey White-eye
- Mauritius Kestrel
- Mauritius Night Heron
- Mauritius Olive White-eye
- Mauritius Owl
- Mauritius Sheldgoose
- Maxwell's Black Weaver
- Mayan Antthrush
- Mayotte Drongo
- Mayotte Scops Owl
- Mayotte Sunbird
- Mayotte White-eye
- Mayr's Forest Rail
- Mayr's Honeyeater
- Mayr's Swiftlet
- Mbulu White-eye
- McConnell's Flycatcher
- McConnell's Spinetail
- McCown's Longspur
- McGregor's Cuckooshrike
- McKay's Bunting
- Meadow Bunting
- Meadow Pipit
- Mediterranean Flycatcher
- Mediterranean Gull
- Medium Ground Finch
- Medium Tree Finch
- Meek's Lorikeet
- Meek's Pygmy Parrot
- Mees's Nightjar
- Mees's White-eye
- Mekong Wagtail
- Melancholy Woodpecker
- Melanesian Flycatcher
- Melanesian Kingfisher
- Melanesian Megapode
- Melanesian Thicketbird
- Melanesian Whistler
- Meller's Duck
- Melodious Babbler
- Melodious Blackbird
- Melodious Lark
- Melodious Warbler
- Menetries's Warbler
- Mentawai Scops Owl
- Merida Brushfinch
- Merida Flowerpiercer
- Merida Sunangel
- Merida Tapaculo
- Merida Wren
- Merlin
- Metallic Pigeon
- Metallic Starling
- Metallic-green Tanager
- Metallic-winged Sunbird
- Meves's Starling
- Mew Gull
- Mewing Kingfisher
- Mexican Cacique
- Mexican Chickadee
- Mexican Duck
- Mexican Hermit
- Mexican Jay
- Mexican Parrotlet
- Mexican Sheartail
- Mexican Violetear
- Mexican Whip-poor-will
- Mexican Woodnymph
- Meyer's Friarbird
- Meyer's Goshawk
- Meyer's Parrot
- Micronesian Imperial Pigeon
- Micronesian Megapode
- Micronesian Myzomela
- Micronesian Starling
- Middendorff's Grasshopper Warbler
- Middle American Screech Owl
- Middle Spotted Woodpecker
- Midget Flowerpecker
- Mid-mountain Berrypecker
- Mikado Pheasant
- Military Macaw
- Milky Stork
- Millerbird
- Mimic Honeyeater
- Minahassa Masked Owl
- Minas Gerais Tyrannulet
- Mindanao Bleeding-heart
- Mindanao Blue Fantail
- Mindanao Brown Dove
- Mindanao Hawk-Owl
- Mindanao Hornbill
- Mindanao Lorikeet
- Mindanao Miniature Babbler
- Mindanao Pygmy Babbler
- Mindanao Racket-tail
- Mindanao Scops Owl
- Mindanao White-eye
- Mindoro Bleeding-heart
- Mindoro Bulbul
- Mindoro Hawk-Owl
- Mindoro Hornbill
- Mindoro Imperial Pigeon
- Mindoro Racket-tail
- Mindoro Scops Owl
- Minute Hermit
- Miombo Blue-eared Starling
- Miombo Pied Barbet
- Miombo Rock Thrush
- Miombo Scrub Robin
- Miombo Tit
- Miombo Wren-Warbler
- Mishana Tyrannulet
- Mississippi Kite
- Mistle Thrush
- Mistletoe Tyrannulet
- Mistletoebird
- Mitred Parakeet
- Mocking Cliff Chat
- Modest Tiger Parrot
- Moheli Brush Warbler
- Moheli Bulbul
- Moheli Scops Owl
- Moltoni's Warbler
- Moluccan Cuckoo
- Moluccan Cuckooshrike
- Moluccan Drongo-Cuckoo
- Moluccan Dwarf Kingfisher
- Moluccan Flycatcher
- Moluccan Goshawk
- Moluccan Hanging Parrot
- Moluccan King Parrot
- Moluccan Masked Owl
- Moluccan Megapode
- Moluccan Monarch
- Moluccan Owlet-nightjar
- Moluccan Scops Owl
- Moluccan Starling
- Moluccan Woodcock
- Mombasa Woodpecker
- Mongolian Finch
- Mongolian Lark
- Mongolian Short-toed Lark
- Monk Parakeet
- Monotonous Lark
- Montagu's Harrier
- Montane Foliage-gleaner
- Montane Nightjar
- Montane Racket-tail
- Montane Tiny Greenbul
- Montane Widowbird
- Montane Woodcreeper
- Monte Yellow Finch
- Monteiro's Bushshrike
- Monteiro's Hornbill
- Monteiro's Storm Petrel
- Montezuma Oropendola
- Montezuma Quail
- Montserrat Oriole
- Moorea Reed Warbler
- Moorea Sandpiper
- Moorland Chat
- Moorland Francolin
- Moreau's Sunbird
- Morelet's Seedeater
- Moreno's Ground Dove
- Morepork
- Morningbird
- Morotai White-eye
- Mosque Swallow
- Moss-backed Tanager
- Mossy-nest Swiftlet
- Mottle-backed Elaenia
- Mottle-breasted Honeyeater
- Mottle-cheeked Tyrannulet
- Mottled Berryhunter
- Mottled Berryhunter
- Mottled Duck
- Mottled Flowerpecker
- Mottled Owl
- Mottled Petrel
- Mottled Piculet
- Mottled Spinetail
- Mottled Swift
- Mottled Wood Owl
- Mount Cameroon Speirops
- Mount Cameroon Spurfowl
- Mount Kupe Bushshrike
- Mount Victoria Babax
- Mountain Avocetbill
- Mountain Bamboo Partridge
- Mountain Barbet
- Mountain Blackeye
- Mountain Bluebird
- Mountain Bulbul
- Mountain Buzzard
- Mountain Caracara
- Mountain Chickadee
- Mountain Chiffchaff
- Mountain Elaenia
- Mountain Firetail
- Mountain Fulvetta
- Mountain Greenbul
- Mountain Hawk-Eagle
- Mountain Honeyeater
- Mountain Illadopsis
- Mountain Imperial Pigeon
- Mountain Kingfisher
- Mountain Leaf Warbler
- Mountain Masked Apalis
- Mountain Mouse-warbler
- Mountain Myzomela
- Mountain Oriole
- Mountain Owlet-nightjar
- Mountain Parakeet
- Mountain Peacock-Pheasant
- Mountain Peltops
- Mountain Pipit
- Mountain Plover
- Mountain Pygmy Owl
- Mountain Quail
- Mountain Robin
- Mountain Robin-Chat
- Mountain Saw-wing
- Mountain Scops Owl
- Mountain Serin
- Mountain Serpent Eagle
- Mountain Shrike
- Mountain Sooty Boubou
- Mountain Starling
- Mountain Swiftlet
- Mountain Tailorbird
- Mountain Thornbill
- Mountain Thrush
- Mountain Trogon
- Mountain Velvetbreast
- Mountain Wagtail
- Mountain Wheatear
- Mountain Wren
- Mountain Wren-Babbler
- Mountain Yellow Warbler
- Mourning Collared Dove
- Mourning Dove
- Mourning Sierra Finch
- Mourning Warbler
- Mourning Wheatear
- Mouse-colored Antshrike
- Mouse-colored Penduline Tit
- Mouse-colored Tapaculo
- Mouse-colored Thistletail
- Mouse-colored Tyrannulet
- Moussier's Redstart
- Moustached Antpitta
- Moustached Antwren
- Moustached Babbler
- Moustached Barbet
- Moustached Brushfinch
- Moustached Flowerpiercer
- Moustached Grass Warbler
- Moustached Hawk-Cuckoo
- Moustached Kingfisher
- Moustached Laughingthrush
- Moustached Puffbird
- Moustached Tinkerbird
- Moustached Treeswift
- Moustached Turca
- Moustached Warbler
- Moustached Woodcreeper
- Moustached Wren
- Mrs. Gould's Sunbird
- Mrs. Hume's Pheasant
- Mugimaki Flycatcher
- Mulga Parrot
- Multicolored Tanager
- Munchique Wood Wren
- Murphy's Petrel
- Muscovy Duck
- Musician Wren
- Musk Duck
- Musk Lorikeet
- Mussau Fantail
- Mussau Monarch
- Mussau Triller
- Mute Swan
- Myrtle Warbler
- Nacunda Nighthawk
- Naga Wren-Babbler
- Nahan's Partridge
- Naked-faced Barbet
- Naked-faced Spiderhunter
- Namaqua Dove
- Namaqua Sandgrouse
- Namaqua Warbler
- Namuli Apalis
- Nanday Parakeet
- Nankeen Kestrel
- Nankeen Night Heron
- Napo Sabrewing
- Narcissus Flycatcher
- Narcondam Hornbill
- Naretha Bluebonnet
- Narina Trogon
- Narino Tapaculo
- Narrow-billed Antwren
- Narrow-billed Tody
- Narrow-billed Woodcreeper
- Narrow-tailed Emerald
- Narrow-tailed Starling
- Nashville Warbler
- Natal Spurfowl
- Natewa Silktail
- Natterer's Slaty Antshrike
- Naumann's Thrush
- Naung Mung Scimitar Babbler
- Nauru Reed Warbler
- Nava's Wren
- Nazca Booby
- Neblina Metaltail
- Neblina Tapaculo
- Nechisar Nightjar
- Necklaced Barbet
- Necklaced Spinetail
- Neddicky
- Needle-billed Hermit
- Neergaard's Sunbird
- Negros Bleeding-heart
- Negros Fruit Dove
- Negros Leaf Warbler
- Negros Scops Owl
- Negros Striped Babbler
- Nelicourvi Weaver
- Nelson's Sparrow
- Nene
- Neotropic Cormorant
- Neotropical Palm Swift
- Nepal Cupwing
- Nepal Fulvetta
- Nepal House Martin
- Neumann's Starling
- Neumann's Warbler
- New Britain Boobook
- New Britain Bronzewing
- New Britain Dwarf Kingfisher
- New Britain Friarbird
- New Britain Goshawk
- New Britain Sparrowhawk
- New Britain Thicketbird
- New Caledonian Crow
- New Caledonian Cuckooshrike
- New Caledonian Friarbird
- New Caledonian Lorikeet
- New Caledonian Myzomela
- New Caledonian Nightjar
- New Caledonian Owlet-nightjar
- New Caledonian Parakeet
- New Caledonian Rail
- New Caledonian Thicketbird
- New Caledonian Whistler
- New Georgia Dwarf Kingfisher
- New Guinea Bronzewing
- New Guinea Flightless Rail
- New Guinea Friarbird
- New Guinea Scrubfowl
- New Guinea Thornbill
- New Guinea Woodcock
- New Holland Honeyeater
- New Ireland Boobook
- New Ireland Dwarf Kingfisher
- New Ireland Friarbird
- New Ireland Myzomela
- New Zealand Bellbird
- New Zealand Bittern
- New Zealand Falcon
- New Zealand Fantail
- New Zealand Fernbird
- New Zealand Grebe
- New Zealand Kaka
- New Zealand King Shag
- New Zealand Merganser
- New Zealand Pigeon
- New Zealand Pipit
- New Zealand Plover
- New Zealand Quail
- New Zealand Rockwren
- New Zealand Scaup
- New Zealand Storm Petrel
- Newell's Shearwater
- Newton's Parakeet
- Newton's Sunbird
- Niam-niam Parrot
- Nias Hill Myna
- Niau Kingfisher
- Nicaraguan Grackle
- Nicaraguan Seed Finch
- Niceforo's Wren
- Nicholson's Pipit
- Nicobar Bulbul
- Nicobar Imperial Pigeon
- Nicobar Jungle Flycatcher
- Nicobar Megapode
- Nicobar Parakeet
- Nicobar Pigeon
- Nicobar Scops Owl
- Nicobar Sparrowhawk
- Night Parrot
- Nightingale Island Finch
- Nightingale Reed Warbler
- Nihoa Finch
- Nile Valley Sunbird
- Nilgiri Blue Robin
- Nilgiri Flowerpecker
- Nilgiri Flycatcher
- Nilgiri Laughingthrush
- Nilgiri Pipit
- Nilgiri Thrush
- Nilgiri Wood Pigeon
- Nimba Flycatcher
- Nkulengu Rail
- Noble Snipe
- Nocturnal Curassow
- Noisy Friarbird
- Noisy Miner
- Noisy Pitta
- Noisy Scrubbird
- Nonggang Babbler
- Nordmann's Greenshank
- Norfolk Gerygone
- Norfolk Ground Dove
- Norfolk Kaka
- Norfolk Parakeet
- Norfolk Robin
- Noronha Elaenia
- Noronha Vireo
- North Island Brown Kiwi
- North Island Kokako
- North Island Piopio
- North Island Robin
- North Island Saddleback
- North Island Snipe
- North Island Takahe
- North Melanesian Cuckooshrike
- North Moluccan Pitta
- North Solomons Dwarf Kingfisher
- Northern Bald Ibis
- Northern Barred Woodcreeper
- Northern Beardless Tyrannulet
- Northern Bentbill
- Northern Black Flycatcher
- Northern Black Korhaan
- Northern Bobwhite
- Northern Boobook
- Northern Brownbul
- Northern Brown-throated Weaver
- Northern Cardinal
- Northern Carmine Bee-eater
- Northern Cassowary
- Northern Catbird
- Northern Chestnut-tailed Antbird
- Northern Crested Caracara
- Northern Crombec
- Northern Double-collared Sunbird
- Northern Fantail
- Northern Fiscal
- Northern Flicker
- Northern Fulmar
- Northern Gannet
- Northern Giant Petrel
- Northern Golden Bulbul
- Northern Goshawk
- Northern Grey-headed Sparrow
- Northern Grosbeak-Canary
- Northern Harrier
- Northern Hawk-Owl
- Northern Jacana
- Northern Lapwing
- Northern Marquesan Reed Warbler
- Northern Masked Weaver
- Northern Mealy Amazon
- Northern Mockingbird
- Northern Mountain Cacique
- Northern Nightingale-Wren
- Northern Parula
- Northern Pied Babbler
- Northern Pintail
- Northern Potoo
- Northern Puffback
- Northern Pygmy Owl
- Northern Raven
- Northern Red Bishop
- Northern Red-billed Hornbill
- Northern Rockhopper Penguin
- Northern Rosella
- Northern Rough-winged Swallow
- Northern Royal Albatross
- Northern Royal Flycatcher
- Northern Saw-whet Owl
- Northern Schiffornis
- Northern Screamer
- Northern Scrub Flycatcher
- Northern Scrub Robin
- Northern Shoveler
- Northern Shrike
- Northern Silvery Kingfisher
- Northern Slaty Antshrike
- Northern Tufted Flycatcher
- Northern Variable Pitohui
- Northern Waterthrush
- Northern Wheatear
- Northern White-crowned Shrike
- Northern White-crowned Tapaculo
- Northern White-faced Owl
- Northern White-fringed Antwren
- Northern Yellow White-eye
- Nubian Bustard
- Nubian Nightjar
- Nubian Woodpecker
- Nuku Hiva Monarch
- Nullarbor Quail-thrush
- Numfor Leaf Warbler
- Numfor Paradise Kingfisher
- Nuthatch Vanga
- Nuttall's Woodpecker
- Nutting's Flycatcher
- Nyanza Swift
- Oahu Akepa
- Oahu Akialoa
- Oahu Alauahio
- Oahu Amakihi
- Oahu Elepaio
- Oahu Nukupuu
- Oahu Oo
- Oak Titmouse
- Oasis Hummingbird
- Oaxaca Hummingbird
- Oaxaca Sparrow
- Obbia Lark
- Oberholser's Fruit Dove
- Oberländer's Ground Thrush
- Obscure Berrypecker
- Obscure Honeyeater
- Oceanic Flycatcher
- Ocellated Antbird
- Ocellated Crake
- Ocellated Piculet
- Ocellated Poorwill
- Ocellated Quail
- Ocellated Tapaculo
- Ocellated Thrasher
- Ocellated Turkey
- Ocellated Woodcreeper
- Ochraceous Attila
- Ochraceous Bulbul
- Ochraceous Pewee
- Ochraceous Piculet
- Ochraceous Wren
- Ochraceous-breasted Flycatcher
- Ochre Oriole
- Ochre-backed Woodpecker
- Ochre-bellied Boobook
- Ochre-bellied Dove
- Ochre-bellied Flycatcher
- Ochre-breasted Antpitta
- Ochre-breasted Brushfinch
- Ochre-breasted Catbird
- Ochre-breasted Foliage-gleaner
- Ochre-breasted Pipit
- Ochre-breasted Tanager
- Ochre-browed Thistletail
- Ochre-cheeked Spinetail
- Ochre-collared Monarch
- Ochre-collared Piculet
- Ochre-faced Tody-Flycatcher
- Ochre-flanked Tapaculo
- Ochre-fronted Antpitta
- Ochre-lored Flatbill
- Ochre-marked Parakeet
- Ochre-naped Ground Tyrant
- Ochre-rumped Antbird
- Ochre-striped Antpitta
- Oilbird
- Okarito Kiwi
- Okinawa Rail
- Okinawa Woodpecker
- Oleaginous Hemispingus
- Olivaceous Elaenia
- Olivaceous Flatbill
- Olivaceous Flycatcher
- Olivaceous Greenlet
- Olivaceous Piculet
- Olivaceous Piha
- Olivaceous Siskin
- Olivaceous Thornbill
- Olivaceous Woodcreeper
- Olive Bee-eater
- Olive Bulbul
- Olive Bushshrike
- Olive Finch
- Olive Flyrobin
- Olive Honeyeater
- Olive Ibis
- Olive Long-tailed Cuckoo
- Olive Manakin
- Olive Oropendola
- Olive Sparrow
- Olive Spinetail
- Olive Straightbill
- Olive Sunbird
- Olive Tanager
- Olive Thrush
- Olive Tufted Flycatcher
- Olive Warbler
- Olive Whistler
- Olive Woodpecker
- Olive-backed Euphonia
- Olive-backed Flowerpecker
- Olive-backed Foliage-gleaner
- Olive-backed Oriole
- Olive-backed Pipit
- Olive-backed Quail-Dove
- Olive-backed Sunbird
- Olive-backed Tailorbird
- Olive-backed Tanager
- Olive-backed Woodcreeper
- Olive-backed Woodpecker
- Olive-bellied Sunbird
- Olive-breasted Greenbul
- Olive-brown Oriole
- Olive-capped Flowerpecker
- Olive-capped Warbler
- Olive-chested Flycatcher
- Olive-colored White-eye
- Olive-crowned Crescentchest
- Olive-crowned Flowerpecker
- Olive-crowned Yellowthroat
- Olive-faced Flatbill
- Olive-flanked Ground Robin
- Olive-green Camaroptera
- Olive-green Tanager
- Olive-green Tyrannulet
- Olive-headed Greenbul
- Olive-headed Lorikeet
- Olive-headed Weaver
- Olive-sided Flycatcher
- Olive-spotted Hummingbird
- Olive-striped Flycatcher
- Olive-throated Parakeet
- Olive-tree Warbler
- Olive-winged Bulbul
- Olomao
- Olrog's Cinclodes
- Olrog's Gull
- Olson's Petrel
- Omani Owl
- Omao
- One-colored Becard
- Opal-crowned Manakin
- Opal-crowned Tanager
- Opal-rumped Tanager
- Opalton Grasswren
- Orange Bullfinch
- Orange Chat
- Orange Fruit Dove
- Orange Ground Thrush
- Orange Minivet
- Orange Oriole
- Orange River Francolin
- Orange River White-eye
- Orange Weaver
- Orange-backed Troupial
- Orange-backed Woodpecker
- Orange-banded Flycatcher
- Orange-bellied Antwren
- Orange-bellied Euphonia
- Orange-bellied Flowerpecker
- Orange-bellied Fruit Dove
- Orange-bellied Leafbird
- Orange-bellied Manakin
- Orange-bellied Parrot
- Orange-billed Babbler
- Orange-billed Lorikeet
- Orange-billed Nightingale-Thrush
- Orange-billed Sparrow
- Orange-breasted Bunting
- Orange-breasted Bushshrike
- Orange-breasted Falcon
- Orange-breasted Fig Parrot
- Orange-breasted Fruiteater
- Orange-breasted Green Pigeon
- Orange-breasted Laughingthrush
- Orange-breasted Sunbird
- Orange-breasted Thornbird
- Orange-breasted Trogon
- Orange-breasted Waxbill
- Orange-browed Hemispingus
- Orange-cheeked Honeyeater
- Orange-cheeked Parrot
- Orange-cheeked Waxbill
- Orange-chinned Parakeet
- Orange-collared Manakin
- Orange-crested Flycatcher
- Orange-crested Manakin
- Orange-crowned Euphonia
- Orange-crowned Fairywren
- Orange-crowned Oriole
- Orange-crowned Warbler
- Orange-eared Tanager
- Orange-eyed Flatbill
- Orange-eyed Thornbird
- Orange-footed Scrubfowl
- Orange-fronted Barbet
- Orange-fronted Fruit Dove
- Orange-fronted Hanging Parrot
- Orange-fronted Parakeet
- Orange-fronted Plushcrown
- Orange-fronted Yellow Finch
- Orange-headed Tanager
- Orange-headed Thrush
- Orange-necked Partridge
- Orangequit
- Orange-sided Thrush
- Orange-spotted Bulbul
- Orange-throated Sunangel
- Orange-throated Tanager
- Orange-tufted Spiderhunter
- Orange-tufted Sunbird
- Orange-winged Amazon
- Orange-winged Pytilia
- Orchard Oriole
- Oriental Bay Owl
- Oriental Cuckoo
- Oriental Darter
- Oriental Dollarbird
- Oriental Dwarf Kingfisher
- Oriental Hobby
- Oriental Magpie
- Oriental Magpie-Robin
- Oriental Pied Hornbill
- Oriental Plover
- Oriental Pratincole
- Oriental Reed Warbler
- Oriental Scops Owl
- Oriental Skylark
- Oriental Stork
- Oriental Turtle Dove
- Oriente Warbler
- Orinoco Goose
- Orinoco Piculet
- Orinoco Saltator
- Orinoco Softtail
- Oriole Blackbird
- Oriole Finch
- Oriole Warbler
- Oriole Whistler
- Ornate Flycatcher
- Ornate Fruit Dove
- Ornate Hawk-Eagle
- Ornate Lorikeet
- Ornate Melidectes
- Ornate Stipplethroat
- Ornate Tinamou
- Ortolan Bunting
- Otago Shag
- Ou
- Oustalet's Sunbird
- Oustalet's Tyrannulet
- Outcrop Sabrewing
- Ouvea Parakeet
- Ovambo Sparrowhawk
- Ovenbird
- Owston's Tit
- Pacific Antwren
- Pacific Baza
- Pacific Black Duck
- Pacific Elaenia
- Pacific Emerald Dove
- Pacific Flatbill
- Pacific Golden Plover
- Pacific Gull
- Pacific Hornero
- Pacific Imperial Pigeon
- Pacific Kingfisher
- Pacific Koel
- Pacific Long-tailed Cuckoo
- Pacific Loon
- Pacific Parakeet
- Pacific Parrotlet
- Pacific Pygmy Owl
- Pacific Reef Heron
- Pacific Robin
- Pacific Royal Flycatcher
- Pacific Screech Owl
- Pacific Swallow
- Pacific Swift
- Pacific Tuftedcheek
- Pacific Wren
- Pacific-slope Flycatcher
- Paddyfield Pipit
- Paddyfield Warbler
- Pagan Reed Warbler
- Paint-billed Crake
- Painted Bunting
- Painted Bush Quail
- Painted Buttonquail
- Painted Finch
- Painted Francolin
- Painted Honeyeater
- Painted Manakin
- Painted Parakeet
- Painted Quail-thrush
- Painted Sandgrouse
- Painted Spurfowl
- Painted Stork
- Painted Tiger Parrot
- Painted Tody-Flycatcher
- Painted Whitestart
- Palani Laughingthrush
- Palau Bush Warbler
- Palau Cicadabird
- Palau Fantail
- Palau Flycatcher
- Palau Fruit Dove
- Palau Ground Dove
- Palau Nightjar
- Palau Owl
- Palau Swiftlet
- Palawan Blue Flycatcher
- Palawan Bulbul
- Palawan Drongo
- Palawan Flowerpecker
- Palawan Flycatcher
- Palawan Frogmouth
- Palawan Hornbill
- Palawan Peacock-Pheasant
- Palawan Scops Owl
- Palawan Striped Babbler
- Palawan Tit
- Pale Batis
- Pale Baywing
- Pale Blue Flycatcher
- Pale Chanting Goshawk
- Pale Cicadabird
- Pale Crag Martin
- Pale Flycatcher
- Pale Martin
- Pale Mountain Pigeon
- Pale Prinia
- Pale Rockfinch
- Pale Rosefinch
- Pale Spiderhunter
- Pale Thrush
- Pale White-eye
- Pale-bellied Hermit
- Pale-bellied Mourner
- Pale-bellied Myna
- Pale-bellied Tapaculo
- Pale-bellied Tyrant-Manakin
- Pale-bellied White-eye
- Pale-billed Antpitta
- Pale-billed Flowerpecker
- Pale-billed Hornbill
- Pale-billed Parrotbill
- Pale-billed Scrubwren
- Pale-billed Sicklebill
- Pale-billed Woodpecker
- Pale-blue Monarch
- Pale-breasted Illadopsis
- Pale-breasted Spinetail
- Pale-breasted Thrush
- Pale-browed Tinamou
- Pale-browed Treehunter
- Pale-capped Pigeon
- Pale-chinned Blue Flycatcher
- Pale-crested Woodpecker
- Pale-crowned Cisticola
- Pale-edged Flycatcher
- Pale-eyed Blackbird
- Pale-eyed Pygmy Tyrant
- Pale-eyed Thrush
- Pale-faced Bare-eye
- Pale-faced Bulbul
- Pale-footed Bush Warbler
- Pale-footed Swallow
- Pale-fronted Nigrita
- Pale-headed Brushfinch
- Pale-headed Jacamar
- Pale-headed Munia
- Pale-headed Rosella
- Pale-headed Woodpecker
- Pale-legged Hornero
- Pale-legged Leaf Warbler
- Pale-legged Warbler
- Pale-mandibled Aracari
- Pale-naped Brushfinch
- Pale-olive Greenbul
- Pale-rumped Swift
- Pale-shouldered Cicadabird
- Palestine Sunbird
- Pale-tailed Barbthroat
- Pale-tailed Canastero
- Pale-throated Wren-Babbler
- Pale-tipped Inezia
- Pale-vented Bush-hen
- Pale-vented Pigeon
- Pale-vented Thrush
- Pale-winged Starling
- Pale-winged Trumpeter
- Pale-yellow Robin
- Palila
- Palkachupa Cotinga
- Pallas's Cormorant
- Pallas's Fish Eagle
- Pallas's Grasshopper Warbler
- Pallas's Gull
- Pallas's Leaf Warbler
- Pallas's Reed Bunting
- Pallas's Rosefinch
- Pallas's Sandgrouse
- Pallid Cuckoo
- Pallid Dove
- Pallid Harrier
- Pallid Honeyguide
- Pallid Scops Owl
- Pallid Spinetail
- Pallid Swift
- Palm Cockatoo
- Palm Lorikeet
- Palm Tanager
- Palm Warbler
- Palmchat
- Palm-nut Vulture
- Pampa Finch
- Pampas Meadowlark
- Pampas Pipit
- Panamanian Flycatcher
- Panamanian Tyrannulet
- Panay Striped Babbler
- Pander's Ground Jay
- Pangani Longclaw
- Pantepui Thrush
- Paperbark Flycatcher
- Papuan Babbler
- Papuan Black Myzomela
- Papuan Boobook
- Papuan Dwarf Kingfisher
- Papuan Eagle
- Papuan Frogmouth
- Papuan Grassbird
- Papuan Harrier
- Papuan Hawk-Owl
- Papuan King Parrot
- Papuan Logrunner
- Papuan Lorikeet
- Papuan Mountain Pigeon
- Papuan Nightjar
- Papuan Parrotfinch
- Papuan Pitta
- Papuan Scrub Robin
- Papuan Scrubwren
- Papuan Sittella
- Papuan Spine-tailed Swift
- Papuan Treecreeper
- Papuan Whipbird
- Papuan White-eye
- Papyrus Canary
- Papyrus Gonolek
- Papyrus Yellow Warbler
- Para Foliage-gleaner
- Para Gnatcatcher
- Paradise Drongo
- Paradise Jacamar
- Paradise Parrot
- Paradise Riflebird
- Paradise Shelduck
- Paradise Tanager
- Paradise-crow
- Parakeet Auklet
- Paramillo Tapaculo
- Paramo Ground Tyrant
- Paramo Pipit
- Paramo Seedeater
- Paramo Tapaculo
- Parasitic Jaeger
- Pardusco
- Paria Brushfinch
- Paria Whitestart
- Parker's Antbird
- Parker's Spinetail
- Parodi's Hemispingus
- Parrot Crossbill
- Parrot-billed Seedeater
- Parrot-billed Sparrow
- Partridge Pigeon
- Passenger Pigeon
- Patagonian Canastero
- Patagonian Forest Earthcreeper
- Patagonian Mockingbird
- Patagonian Sierra Finch
- Patagonian Tinamou
- Patagonian Tyrant
- Patagonian Yellow Finch
- Pauraque
- Pavonine Cuckoo
- Pavonine Quetzal
- Peaceful Dove
- Peach-fronted Parakeet
- Peacock Coquette
- Pearl Kite
- Pearl-bellied White-eye
- Pearl-breasted Swallow
- Pearled Treerunner
- Pearl-spotted Owlet
- Pearly Antshrike
- Pearly Parakeet
- Pearly-bellied Seedeater
- Pearly-breasted Conebill
- Pearly-breasted Cuckoo
- Pearly-eyed Thrasher
- Pearly-vented Tody-Tyrant
- Pechora Pipit
- Pectoral Antwren
- Pectoral Sandpiper
- Pectoral Sparrow
- Pectoral-patch Cisticola
- Peg-billed Finch
- Pelagic Cormorant
- Peleng Fantail
- Pel's Fishing Owl
- Pelzeln's Tody-Tyrant
- Pemba Green Pigeon
- Pemba Scops Owl
- Pemba Sunbird
- Pemba White-eye
- Penan Bulbul
- Pennant-winged Nightjar
- Pere David's Owl
- Pere David's Snowfinch
- Pere David's Tit
- Peregrine Falcon
- Perija Brushfinch
- Perija Metaltail
- Perija Tapaculo
- Perija Thistletail
- Pernambuco Foliage-gleaner
- Pernambuco Pygmy Owl
- Perplexing Scrubwren
- Persian Shearwater
- Peruvian Antpitta
- Peruvian Booby
- Peruvian Diving Petrel
- Peruvian Martin
- Peruvian Meadowlark
- Peruvian Pelican
- Peruvian Piedtail
- Peruvian Pipit
- Peruvian Plantcutter
- Peruvian Racket-tail
- Peruvian Recurvebill
- Peruvian Seaside Cinclodes
- Peruvian Sheartail
- Peruvian Sierra Finch
- Peruvian Tern
- Peruvian Thick-knee
- Peruvian Treehunter
- Peruvian Tyrannulet
- Peruvian Warbling Antbird
- Peruvian Wren
- Pesquet's Parrot
- Petit's Cuckooshrike
- Pfrimer's Parakeet
- Phainopepla
- Pharaoh Eagle-Owl
- Pheasant Coucal
- Pheasant Cuckoo
- Pheasant Pigeon
- Pheasant-tailed Jacana
- Philadelphia Vireo
- Philby's Partridge
- Philippa's Crombec
- Philippine Bulbul
- Philippine Bush Warbler
- Philippine Coucal
- Philippine Cuckoo-Dove
- Philippine Drongo-Cuckoo
- Philippine Duck
- Philippine Dwarf Kingfisher
- Philippine Eagle
- Philippine Eagle-Owl
- Philippine Fairy-bluebird
- Philippine Falconet
- Philippine Frogmouth
- Philippine Green Pigeon
- Philippine Hanging Parrot
- Philippine Hawk-Cuckoo
- Philippine Hawk-Eagle
- Philippine Honey Buzzard
- Philippine Leaf Warbler
- Philippine Leafbird
- Philippine Magpie-Robin
- Philippine Megapode
- Philippine Nightjar
- Philippine Oriole
- Philippine Pied Fantail
- Philippine Pitta
- Philippine Pygmy Woodpecker
- Philippine Scops Owl
- Philippine Serpent Eagle
- Philippine Spine-tailed Swift
- Philippine Swamphen
- Philippine Swiftlet
- Philippine Tailorbird
- Philippine Trogon
- Phoenix Petrel
- Piapiac
- Picazuro Pigeon
- Pictorella Mannikin
- Picui Ground Dove
- Pied Avocet
- Pied Bush Chat
- Pied Butcherbird
- Pied Crow
- Pied Cuckoo-Dove
- Pied Cuckooshrike
- Pied Currawong
- Pied Falconet
- Pied Goshawk
- Pied Harrier
- Pied Heron
- Pied Honeyeater
- Pied Imperial Pigeon
- Pied Kingfisher
- Pied Monarch
- Pied Myna
- Pied Oystercatcher
- Pied Plover
- Pied Puffbird
- Pied Shrike-babbler
- Pied Starling
- Pied Stilt
- Pied Thrush
- Pied Triller
- Pied Water Tyrant
- Pied Wheatear
- Pied-billed Grebe
- Pied-crested Tit-Tyrant
- Pied-winged Swallow
- Pigeon Guillemot
- Pileated Flycatcher
- Pileated Parrot
- Pileated Woodpecker
- Pilotbird
- Pincoya Storm Petrel
- Pine Bunting
- Pine Flycatcher
- Pine Grosbeak
- Pine Siskin
- Pine Warbler
- Pink Pigeon
- Pink Robin
- Pink-backed Pelican
- Pink-bellied Imperial Pigeon
- Pink-billed Lark
- Pink-billed Parrotfinch
- Pink-breasted Lark
- Pink-browed Rosefinch
- Pink-eared Duck
- Pink-footed Goose
- Pink-footed Puffback
- Pink-footed Shearwater
- Pink-headed Duck
- Pink-headed Fruit Dove
- Pink-headed Imperial Pigeon
- Pink-headed Warbler
- Pink-legged Graveteiro
- Pink-legged Rail
- Pink-necked Green Pigeon
- Pink-rumped Rosefinch
- Pink-spotted Fruit Dove
- Pink-throated Becard
- Pink-throated Brilliant
- Pink-throated Twinspot
- Pinnated Bittern
- Pinon's Imperial Pigeon
- Pinsker's Hawk-Eagle
- Pin-striped Tit-Babbler
- Pin-tailed Green Pigeon
- Pin-tailed Manakin
- Pin-tailed Parrotfinch
- Pin-tailed Sandgrouse
- Pin-tailed Snipe
- Pin-tailed Whydah
- Pinto's Spinetail
- Pinyon Jay
- Piping Bellbird
- Piping Crow
- Piping Hornbill
- Piping Plover
- Pipipi
- Piratic Flycatcher
- Pirre Bush Tanager
- Pirre Hummingbird
- Pirre Warbler
- Pitcairn Reed Warbler
- Pitt Shag
- Pitta-like Ground Roller
- Piura Chat-Tyrant
- Piura Hemispingus
- Placid Greenbul
- Plain Antvireo
- Plain Bush-hen
- Plain Chachalaca
- Plain Flowerpecker
- Plain Gerygone
- Plain Greenbul
- Plain Honeyeater
- Plain Inezia
- Plain Laughingthrush
- Plain Leaf Warbler
- Plain Mountain Finch
- Plain Nightjar
- Plain Parakeet
- Plain Pigeon
- Plain Prinia
- Plain Softtail
- Plain Sunbird
- Plain Swift
- Plain Thornbird
- Plain White-eye
- Plain Xenops
- Plain-backed Antpitta
- Plain-backed Pipit
- Plain-backed Sparrow
- Plain-backed Sunbird
- Plain-bellied Emerald
- Plain-breasted Ground Dove
- Plain-breasted Hawk
- Plain-breasted Piculet
- Plain-brown Woodcreeper
- Plain-capped Starthroat
- Plain-colored Seedeater
- Plain-colored Tanager
- Plain-crested Elaenia
- Plain-crowned Spinetail
- Plain-flanked Rail
- Plain-mantled Tit-Spinetail
- Plain-pouched Hornbill
- Plains-wanderer
- Plain-tailed Nighthawk
- Plain-tailed Warbling Finch
- Plain-tailed Wren
- Plain-throated Antwren
- Plaintive Cuckoo
- Plain-winged Antshrike
- Plain-winged Antwren
- Plain-winged Woodcreeper
- Planalto Foliage-gleaner
- Planalto Hermit
- Planalto Slaty Antshrike
- Planalto Tapaculo
- Planalto Tyrannulet
- Planalto Woodcreeper
- Plate-billed Mountain Toucan
- Pleske's Ground Jay
- Plumbeous Antbird
- Plumbeous Antvireo
- Plumbeous Euphonia
- Plumbeous Forest Falcon
- Plumbeous Hawk
- Plumbeous Ibis
- Plumbeous Kite
- Plumbeous Pigeon
- Plumbeous Rail
- Plumbeous Seedeater
- Plumbeous Sierra Finch
- Plumbeous Tyrant
- Plumbeous Vireo
- Plumbeous Warbler
- Plumbeous Water Redstart
- Plumbeous-backed Thrush
- Plumbeous-crowned Tyrannulet
- Plum-crowned Parrot
- Plumed Guineafowl
- Plumed Whistling Duck
- Plume-toed Swiftlet
- Plum-faced Lorikeet
- Plum-headed Finch
- Plum-headed Parakeet
- Plum-throated Cotinga
- Plushcap
- Plush-crested Jay
- Pohnpei Cicadabird
- Pohnpei Fantail
- Pohnpei Flycatcher
- Pohnpei Kingfisher
- Pohnpei Lorikeet
- Pohnpei Starling
- Point-tailed Palmcreeper
- Pollen's Vanga
- Polynesian Ground Dove
- Polynesian Imperial Pigeon
- Polynesian Starling
- Polynesian Storm Petrel
- Polynesian Triller
- Polynesian Wattled Honeyeater
- Pomarine Jaeger
- Pompadour Cotinga
- Poo-uli
- Powerful Owl
- Powerful Woodpecker
- Prairie Falcon
- Prairie Warbler
- Predicted Antwren
- Preuss's Cliff Swallow
- Preuss's Weaver
- Prevost's Ground Sparrow
- Prigogine's Double-collared Sunbird
- Prigogine's Greenbul
- Prigogine's Nightjar
- Princess Parrot
- Princess Stephanie's Astrapia
- Principe Seedeater
- Principe Speirops
- Principe Starling
- Principe Sunbird
- Principe Thrush
- Principe Weaver
- Principe White-eye
- Pringle's Puffback
- Pririt Batis
- Prong-billed Barbet
- Protea Canary
- Prothonotary Warbler
- Providence Petrel
- Providencia Vireo
- Przevalski's Finch
- Przevalski's Nuthatch
- Przevalski's Parrotbill
- Przevalski's Partridge
- Przevalski's Redstart
- Puaiohi
- Puerto Rican Amazon
- Puerto Rican Bullfinch
- Puerto Rican Emerald
- Puerto Rican Flycatcher
- Puerto Rican Lizard Cuckoo
- Puerto Rican Nightjar
- Puerto Rican Oriole
- Puerto Rican Owl
- Puerto Rican Parakeet
- Puerto Rican Spindalis
- Puerto Rican Tanager
- Puerto Rican Tody
- Puerto Rican Vireo
- Puerto Rican Woodpecker
- Puff-backed Bulbul
- Puff-backed Honeyeater
- Puff-throated Babbler
- Puff-throated Bulbul
- Pulitzer's Longbill
- Puna Canastero
- Puna Ground Tyrant
- Puna Ibis
- Puna Miner
- Puna Pipit
- Puna Plover
- Puna Snipe
- Puna Tapaculo
- Puna Teal
- Puna Thistletail
- Puna Tinamou
- Puna Yellow Finch
- Purple Cochoa
- Purple Finch
- Purple Gallinule
- Purple Grenadier
- Purple Heron
- Purple Honeycreeper
- Purple Indigobird
- Purple Martin
- Purple Needletail
- Purple Quail-Dove
- Purple Roller
- Purple Sandpiper
- Purple Starling
- Purple Sunbird
- Purple-backed Fairywren
- Purple-backed Sunbeam
- Purple-backed Thornbill
- Purple-banded Sunbird
- Purple-bearded Bee-eater
- Purple-bellied Lory
- Purple-bibbed Whitetip
- Purple-breasted Cotinga
- Purple-breasted Sunbird
- Purple-capped Fruit Dove
- Purple-chested Hummingbird
- Purple-collared Woodstar
- Purple-crested Turaco
- Purple-crowned Fairy
- Purple-crowned Fairywren
- Purple-crowned Lorikeet
- Purple-crowned Plovercrest
- Purple-gaped Honeyeater
- Purple-headed Starling
- Purple-naped Lory
- Purple-naped Sunbird
- Purple-rumped Sunbird
- Purple-tailed Imperial Pigeon
- Purple-throated Carib
- Purple-throated Cotinga
- Purple-throated Cuckooshrike
- Purple-throated Euphonia
- Purple-throated Fruitcrow
- Purple-throated Mountaingem
- Purple-throated Sunangel
- Purple-throated Sunbird
- Purple-throated Woodstar
- Purple-winged Ground Dove
- Purple-winged Roller
- Purplish Jacamar
- Purplish Jay
- Purplish-backed Jay
- Purplish-backed Quail-Dove
- Purplish-mantled Tanager
- Purus Jacamar
- Puvel's Illadopsis
- Pycroft's Petrel
- Pygmy Antwren
- Pygmy Batis
- Pygmy Bushtit
- Pygmy Cormorant
- Pygmy Cuckooshrike
- Pygmy Cupwing
- Pygmy Eagle
- Pygmy Falcon
- Pygmy Flowerpecker
- Pygmy Flycatcher
- Pygmy Hanging Parrot
- Pygmy Longbill
- Pygmy Lorikeet
- Pygmy Nightjar
- Pygmy Nuthatch
- Pygmy Palm Swift
- Pygmy Sunbird
- Pygmy Swiftlet
- Pygmy White-eye
- Pyrrhuloxia
- Quailfinch
- Quailfinch Indigobird
- Quail-plover
- Quebracho Crested Tinamou
- Queen Carola's Parotia
- Rachel's Malimbe
- Racket-tailed Coquette
- Racket-tailed Roller
- Racket-tailed Treepie
- Radde's Accentor
- Radde's Warbler
- Raffles's Malkoha
- Raggiana Bird-of-paradise
- Raiatea Parakeet
- Rail-babbler
- Raimondi's Yellow Finch
- Rain Quail
- Rainbow Bee-eater
- Rainbow Lorikeet
- Rainbow Pitta
- Rainbow Starfrontlet
- Rainbow-bearded Thornbill
- Rainforest Scops Owl
- Raja Ampat Pitohui
- Raja Shelduck
- Rajah Scops Owl
- Rand's Warbler
- Ranongga White-eye
- Rapa Fruit Dove
- Rapa Shearwater
- Rarotonga Monarch
- Rarotonga Starling
- Raso Lark
- Ratchet-tailed Treepie
- Rattling Cisticola
- Razorbill
- Razor-billed Curassow
- Recurve-billed Bushbird
- Red Avadavat
- Red Bird-of-paradise
- Red Collared Dove
- Red Crossbill
- Red Fody
- Red Fox Sparrow
- Red Goshawk
- Red Junglefowl
- Red Kite
- Red Knot
- Red Lark
- Red Lory
- Red Myzomela
- Red Owl
- Red Phalarope
- Red Pileated Finch
- Red Rail
- Red Sea Cliff Swallow
- Red Shoveler
- Red Siskin
- Red Spurfowl
- Red Tanager
- Red Warbler
- Red Wattlebird
- Red-and-black Grosbeak
- Red-and-black Thrush
- Red-and-blue Lory
- Red-and-green Macaw
- Red-and-white Antpitta
- Red-and-white Crake
- Red-and-white Spinetail
- Red-and-yellow Barbet
- Red-backed Buttonquail
- Red-backed Fairywren
- Red-backed Flameback
- Red-backed Kingfisher
- Red-backed Mannikin
- Red-backed Mousebird
- Red-backed Shrike
- Red-backed Sierra Finch
- Red-backed Thrush
- Red-banded Flowerpecker
- Red-banded Fruiteater
- Red-bearded Bee-eater
- Red-bellied Fruit Dove
- Red-bellied Grackle
- Red-bellied Macaw
- Red-bellied Malimbe
- Red-bellied Paradise Flycatcher
- Red-bellied Parrot
- Red-bellied Woodpecker
- Red-billed Blue Magpie
- Red-billed Brushturkey
- Red-billed Buffalo Weaver
- Red-billed Chough
- Red-billed Curassow
- Red-billed Dwarf Hornbill
- Red-billed Emerald
- Red-billed Firefinch
- Red-billed Ground Cuckoo
- Red-billed Helmetshrike
- Red-billed Leiothrix
- Red-billed Malkoha
- Red-billed Oxpecker
- Red-billed Parrot
- Red-billed Partridge
- Red-billed Pied Tanager
- Red-billed Pigeon
- Red-billed Pytilia
- Red-billed Quelea
- Red-billed Scimitar Babbler
- Red-billed Scythebill
- Red-billed Spurfowl
- Red-billed Starling
- Red-billed Streamertail
- Red-billed Teal
- Red-billed Tropicbird
- Red-billed Tyrannulet
- Red-billed Woodcreeper
- Red-breasted Blackbird
- Red-breasted Chat
- Red-breasted Coua
- Red-breasted Flycatcher
- Red-breasted Goose
- Red-breasted Merganser
- Red-breasted Nuthatch
- Red-breasted Paradise Kingfisher
- Red-breasted Parakeet
- Red-breasted Partridge
- Red-breasted Pygmy Parrot
- Red-breasted Sapsucker
- Red-breasted Swallow
- Red-breasted Wheatear
- Red-browed Amazon
- Red-browed Finch
- Red-browed Pardalote
- Red-browed Treecreeper
- Red-capped Cardinal
- Red-capped Coua
- Red-capped Crombec
- Red-capped Flowerpecker
- Red-capped Forest Warbler
- Red-capped Lark
- Red-capped Manakin
- Red-capped Myzomela
- Red-capped Parrot
- Red-capped Plover
- Red-capped Robin
- Red-capped Robin-Chat
- Red-cheeked Cordon-bleu
- Red-cheeked Parrot
- Red-cheeked Wattle-eye
- Red-chested Buttonquail
- Red-chested Cuckoo
- Red-chested Flufftail
- Red-chested Goshawk
- Red-chested Owlet
- Red-chested Sunbird
- Red-chested Swallow
- Red-chinned Lorikeet
- Red-cockaded Woodpecker
- Red-collared Babbler
- Red-collared Lorikeet
- Red-collared Myzomela
- Red-collared Widowbird
- Red-collared Woodpecker
- Red-cowled Cardinal
- Red-crested Cardinal
- Red-crested Cotinga
- Red-crested Korhaan
- Red-crested Pochard
- Red-crested Turaco
- Red-crowned Amazon
- Red-crowned Ant Tanager
- Red-crowned Barbet
- Red-crowned Crane
- Red-crowned Malimbe
- Red-crowned Parakeet
- Red-crowned Woodpecker
- Reddish Egret
- Reddish Hermit
- Reddish Scops Owl
- Reddish-winged Bare-eye
- Red-eared Firetail
- Red-eared Fruit Dove
- Red-eared Parrotfinch
- Red-eyed Dove
- Red-eyed Puffback
- Red-eyed Vireo
- Red-faced Barbet
- Red-faced Cisticola
- Red-faced Cormorant
- Red-faced Crimsonwing
- Red-faced Crombec
- Red-faced Guan
- Red-faced Liocichla
- Red-faced Malkoha
- Red-faced Mousebird
- Red-faced Parrot
- Red-faced Spinetail
- Red-faced Warbler
- Red-faced Woodland Warbler
- Red-fan Parrot
- Red-flanked Bluetail
- Red-flanked Lorikeet
- Red-footed Booby
- Red-footed Falcon
- Red-fronted Antpecker
- Red-fronted Barbet
- Red-fronted Coot
- Red-fronted Coua
- Red-fronted Lorikeet
- Red-fronted Macaw
- Red-fronted Parrot
- Red-fronted Parrotlet
- Red-fronted Prinia
- Red-fronted Rosefinch
- Red-fronted Serin
- Red-fronted Tinkerbird
- Red-gartered Coot
- Redhead
- Red-headed Barbet
- Red-headed Bluebill
- Red-headed Bullfinch
- Red-headed Bunting
- Red-headed Finch
- Red-headed Flameback
- Red-headed Lovebird
- Red-headed Malimbe
- Red-headed Manakin
- Red-headed Myzomela
- Red-headed Parrotfinch
- Red-headed Quelea
- Red-headed Tanager
- Red-headed Trogon
- Red-headed Vulture
- Red-headed Weaver
- Red-headed Woodpecker
- Red-hooded Tanager
- Red-keeled Flowerpecker
- Red-kneed Dotterel
- Red-knobbed Coot
- Red-knobbed Imperial Pigeon
- Red-legged Cormorant
- Red-legged Crake
- Red-legged Honeycreeper
- Red-legged Kittiwake
- Red-legged Partridge
- Red-legged Seriema
- Red-legged Thrush
- Red-legged Tinamou
- Red-lored Amazon
- Red-lored Whistler
- Red-mantled Rosefinch
- Red-masked Parakeet
- Red-moustached Fruit Dove
- Red-naped Bushshrike
- Red-naped Fruit Dove
- Red-naped Ibis
- Red-naped Sapsucker
- Red-naped Trogon
- Red-necked Amazon
- Red-necked Aracari
- Red-necked Avocet
- Red-necked Buzzard
- Red-necked Crake
- Red-necked Falcon
- Red-necked Grebe
- Red-necked Nightjar
- Red-necked Phalarope
- Red-necked Spurfowl
- Red-necked Stint
- Red-necked Tanager
- Red-necked Woodpecker
- Red-pate Cisticola
- Red-ruffed Fruitcrow
- Red-rumped Bush Tyrant
- Red-rumped Cacique
- Red-rumped Parrot
- Red-rumped Swallow
- Red-rumped Tinkerbird
- Red-rumped Wheatear
- Red-rumped Woodpecker
- Red-shouldered Blackbird
- Red-shouldered Cuckooshrike
- Red-shouldered Hawk
- Red-shouldered Macaw
- Red-shouldered Spinetail
- Red-shouldered Tanager
- Red-shouldered Vanga
- Red-spectacled Amazon
- Red-stained Woodpecker
- Red-tailed Amazon
- Red-tailed Ant Thrush
- Red-tailed Black Cockatoo
- Red-tailed Bristlebill
- Red-tailed Comet
- Red-tailed Greenbul
- Red-tailed Hawk
- Red-tailed Laughingthrush
- Red-tailed Leaflove
- Red-tailed Minla
- Red-tailed Newtonia
- Red-tailed Shrike
- Red-tailed Tropicbird
- Red-tailed Vanga
- Red-tailed Wheatear
- Red-thighed Sparrowhawk
- Redthroat
- Red-throated Alethe
- Red-throated Ant Tanager
- Red-throated Barbet
- Red-throated Bee-eater
- Red-throated Caracara
- Red-throated Cliff Swallow
- Red-throated Loon
- Red-throated Lorikeet
- Red-throated Parakeet
- Red-throated Parrotfinch
- Red-throated Piping Guan
- Red-throated Pipit
- Red-throated Sunbird
- Red-throated Thrush
- Red-throated Tit
- Red-throated Twinspot
- Red-throated Wryneck
- Red-vented Barbet
- Red-vented Bulbul
- Red-vented Cockatoo
- Red-vented Malimbe
- Red-vested Myzomela
- Red-wattled Lapwing
- Red-whiskered Bulbul
- Redwing
- Red-winged Blackbird
- Red-winged Fairywren
- Red-winged Francolin
- Red-winged Grey Warbler
- Red-winged Lark
- Red-winged Laughingthrush
- Red-winged Parrot
- Red-winged Prinia
- Red-winged Pytilia
- Red-winged Starling
- Red-winged Tinamou
- Red-winged Wood Rail
- Reed Cormorant
- Reed Parrotbill
- Reeves's Pheasant
- Regal Sunbird
- Regent Bowerbird
- Regent Honeyeater
- Regent Parrot
- Regent Whistler
- Reichard's Seedeater
- Reichenbach's Sunbird
- Reichenow's Batis
- Reichenow's Seedeater
- Reischek's Parakeet
- Reiser's Tyrannulet
- Relict Gull
- Rennell Fantail
- Rennell Shrikebill
- Rennell Starling
- Rennell Whistler
- Rennell White-eye
- Resplendent Quetzal
- Restinga Tyrannulet
- Restless Flycatcher
- Retz's Helmetshrike
- Reunion Bulbul
- Reunion Cuckooshrike
- Reunion Grey White-eye
- Reunion Harrier
- Reunion Ibis
- Reunion Kestrel
- Reunion Night Heron
- Reunion Olive White-eye
- Reunion Owl
- Reunion Rail
- Reunion Sheldgoose
- Reunion Stonechat
- Rhinoceros Auklet
- Rhinoceros Hornbill
- Ribbon-tailed Astrapia
- Richard's Pipit
- Ridgetop Swiftlet
- Ridgway's Hawk
- Ridgway's Rail
- Rifleman
- Rimatara Reed Warbler
- Ring Ouzel
- Ring-billed Gull
- Ringed Antpipit
- Ringed Kingfisher
- Ringed Teal
- Ringed Warbling Finch
- Ringed Woodpecker
- Ring-necked Dove
- Ring-necked Duck
- Ring-necked Francolin
- Ring-tailed Pigeon
- Rinjani Scops Owl
- Rio Branco Antbird
- Rio de Janeiro Antbird
- Rio de Janeiro Antwren
- Rio Madeira Stipplethroat
- Rio Negro Gnatcatcher
- Rio Orinoco Spinetail
- Rio Suno Antwren
- Riparian Antbird
- River Lapwing
- River Prinia
- River Tern
- River Tyrannulet
- River Warbler
- Riverbank Warbler
- Riverside Tyrant
- Riverside Wren
- Rivoli's Hummingbird
- Roadside Hawk
- Roberts's Warbler
- Robin Accentor
- Robust White-eye
- Robust Woodpecker
- Rock Bunting
- Rock Bush Quail
- Rock Dove
- Rock Earthcreeper
- Rock Firefinch
- Rock Kestrel
- Rock Martin
- Rock Parrot
- Rock Partridge
- Rock Pratincole
- Rock Ptarmigan
- Rock Sandpiper
- Rock Shag
- Rock Sparrow
- Rock Tapaculo
- Rock Wren
- Rockefeller's Sunbird
- Rock-loving Cisticola
- Rockrunner
- Rockwarbler
- Rodrigues Fody
- Rodrigues Night Heron
- Rodrigues Owl
- Rodrigues Parrot
- Rodrigues Pigeon
- Rodrigues Rail
- Rodrigues Solitaire
- Rodrigues Starling
- Rodrigues Warbler
- Roll's Partridge
- Romblon Hawk-Owl
- Rondonia Bushbird
- Rondonia Warbling Antbird
- Rondonia Woodcreeper
- Rook
- Roraiman Antbird
- Roraiman Antwren
- Roraiman Barbtail
- Roraiman Flycatcher
- Roraiman Nightjar
- Roraiman Warbler
- Rose Robin
- Roseate Spoonbill
- Roseate Tern
- Rose-bellied Bunting
- Rose-breasted Chat
- Rose-breasted Grosbeak
- Rose-collared Piha
- Rose-crowned Fruit Dove
- Rose-crowned Parakeet
- Rose-faced Parrot
- Rose-fronted Parakeet
- Rose-ringed Parakeet
- Rose-throated Becard
- Rose-throated Tanager
- Ross's Goose
- Ross's Gull
- Ross's Turaco
- Rosy Bee-eater
- Rosy Minivet
- Rosy Pipit
- Rosy Starling
- Rosy Thrush-tanager
- Rosy-billed Pochard
- Rosy-faced Lovebird
- Rosy-patched Bushshrike
- Rosy-throated Longclaw
- Rota White-eye
- Rote Boobook
- Rote Leaf Warbler
- Rote Myzomela
- Rothschild's Swift
- Rotuma Myzomela
- Rouget's Rail
- Rough-crested Malkoha
- Rough-legged Buzzard
- Rough-legged Tyrannulet
- Round-tailed Manakin
- Roviana Rail
- Royal Cinclodes
- Royal Parrotfinch
- Royal Penguin
- Royal Spoonbill
- Royal Sunangel
- Royal Tern
- Ruaha Chat
- Rubeho Akalat
- Rubeho Forest Partridge
- Rubeho Warbler
- Ruby-cheeked Sunbird
- Ruby-crowned Kinglet
- Ruby-crowned Tanager
- Ruby-throated Bulbul
- Ruby-throated Hummingbird
- Ruby-throated Myzomela
- Ruby-topaz Hummingbird
- Rück's Blue Flycatcher
- Rudd's Apalis
- Rudd's Lark
- Ruddy Crake
- Ruddy Cuckoo-Dove
- Ruddy Duck
- Ruddy Foliage-gleaner
- Ruddy Ground Dove
- Ruddy Kingfisher
- Ruddy Pigeon
- Ruddy Quail-Dove
- Ruddy Shelduck
- Ruddy Spinetail
- Ruddy Tody-Flycatcher
- Ruddy Treerunner
- Ruddy Turnstone
- Ruddy Woodcreeper
- Ruddy-breasted Crake
- Ruddy-breasted Seedeater
- Ruddy-capped Nightingale-Thrush
- Ruddy-headed Goose
- Ruddy-tailed Flycatcher
- Rufescent Antshrike
- Rufescent Darkeye
- Rufescent Imperial Pigeon
- Rufescent Prinia
- Rufescent Screech Owl
- Rufescent Tiger Heron
- Ruff
- Ruffed Grouse
- Rufous Antpitta
- Rufous Babbler
- Rufous Bristlebird
- Rufous Casiornis
- Rufous Chatterer
- Rufous Cisticola
- Rufous Coucal
- Rufous Crab Hawk
- Rufous Fantail
- Rufous Fieldwren
- Rufous Fishing Owl
- Rufous Flycatcher
- Rufous Gnateater
- Rufous Grasswren
- Rufous Hawk-Cuckoo
- Rufous Hornbill
- Rufous Hornero
- Rufous Hummingbird
- Rufous Monarch
- Rufous Motmot
- Rufous Mourner
- Rufous Nightjar
- Rufous Owl
- Rufous Paradise Flycatcher
- Rufous Piculet
- Rufous Piha
- Rufous Potoo
- Rufous Sabrewing
- Rufous Scrubbird
- Rufous Shrikethrush
- Rufous Sibia
- Rufous Songlark
- Rufous Spinetail
- Rufous Treecreeper
- Rufous Treepie
- Rufous Twistwing
- Rufous Vanga
- Rufous Whistler
- Rufous Woodpecker
- Rufous Wren
- Rufous-and-white Wren
- Rufous-backed Antvireo
- Rufous-backed Fantail
- Rufous-backed Honeyeater
- Rufous-backed Inca Finch
- Rufous-backed Sibia
- Rufous-backed Stipplethroat
- Rufous-backed Thrush
- Rufous-backed Wren
- Rufous-banded Honeyeater
- Rufous-banded Miner
- Rufous-banded Owl
- Rufous-bellied Antwren
- Rufous-bellied Bush Tyrant
- Rufous-bellied Chachalaca
- Rufous-bellied Eagle
- Rufous-bellied Euphonia
- Rufous-bellied Helmetshrike
- Rufous-bellied Heron
- Rufous-bellied Kookaburra
- Rufous-bellied Mountain Tanager
- Rufous-bellied Nighthawk
- Rufous-bellied Niltava
- Rufous-bellied Seedsnipe
- Rufous-bellied Swallow
- Rufous-bellied Thrush
- Rufous-bellied Tit
- Rufous-bellied Triller
- Rufous-bellied Woodpecker
- Rufous-booted Racket-tail
- Rufous-breasted Accentor
- Rufous-breasted Antpitta
- Rufous-breasted Antthrush
- Rufous-breasted Bush Robin
- Rufous-breasted Chat-Tyrant
- Rufous-breasted Flycatcher
- Rufous-breasted Hermit
- Rufous-breasted Leaftosser
- Rufous-breasted Piculet
- Rufous-breasted Sabrewing
- Rufous-breasted Sparrowhawk
- Rufous-breasted Spinetail
- Rufous-breasted Warbling Finch
- Rufous-breasted Wood Quail
- Rufous-breasted Wren
- Rufous-browed Conebill
- Rufous-browed Flycatcher
- Rufous-browed Hemispingus
- Rufous-browed Peppershrike
- Rufous-browed Tyrannulet
- Rufous-browed Wren
- Rufous-brown Solitaire
- Rufous-capped Antshrike
- Rufous-capped Antthrush
- Rufous-capped Babbler
- Rufous-capped Brushfinch
- Rufous-capped Lark
- Rufous-capped Motmot
- Rufous-capped Nunlet
- Rufous-capped Spinetail
- Rufous-capped Thornbill
- Rufous-capped Warbler
- Rufous-cheeked Laughingthrush
- Rufous-cheeked Nightjar
- Rufous-cheeked Tanager
- Rufous-chested Flycatcher
- Rufous-chested Plover
- Rufous-chested Tanager
- Rufous-chinned Laughingthrush
- Rufous-collared Kingfisher
- Rufous-collared Sparrow
- Rufous-collared Thrush
- Rufous-crested Coquette
- Rufous-crested Tanager
- Rufous-crowned Antpitta
- Rufous-crowned Babbler
- Rufous-crowned Elaenia
- Rufous-crowned Emu-wren
- Rufous-crowned Eremomela
- Rufous-crowned Greenlet
- Rufous-crowned Laughingthrush
- Rufous-crowned Sparrow
- Rufous-crowned Tody-Flycatcher
- Rufous-eared Brushfinch
- Rufous-eared Warbler
- Rufous-faced Antbird
- Rufous-faced Antpitta
- Rufous-faced Crake
- Rufous-faced Warbler
- Rufous-fronted Antthrush
- Rufous-fronted Babbler
- Rufous-fronted Bushtit
- Rufous-fronted Laughingthrush
- Rufous-fronted Parakeet
- Rufous-fronted Prinia
- Rufous-fronted Tailorbird
- Rufous-fronted Thornbird
- Rufous-fronted Wood Quail
- Rufous-gaped Hillstar
- Rufous-gorgeted Flycatcher
- Rufous-headed Chachalaca
- Rufous-headed Ground Roller
- Rufous-headed Parrotbill
- Rufous-headed Pygmy Tyrant
- Rufous-headed Robin
- Rufous-headed Tailorbird
- Rufous-headed Tanager
- Rufous-headed Woodpecker
- Rufous-legged Owl
- Rufous-lored Tyrannulet
- Rufous-naped Bellbird
- Rufous-naped Greenlet
- Rufous-naped Ground Tyrant
- Rufous-naped Lark
- Rufous-naped Tit
- Rufous-necked Foliage-gleaner
- Rufous-necked Hornbill
- Rufous-necked Laughingthrush
- Rufous-necked Puffbird
- Rufous-necked Snowfinch
- Rufous-necked Sparrowhawk
- Rufous-necked Wood Rail
- Rufous-rumped Antwren
- Rufous-rumped Foliage-gleaner
- Rufous-rumped Lark
- Rufous-rumped Seedeater
- Rufous-shafted Woodstar
- Rufous-sided Broadbill
- Rufous-sided Crake
- Rufous-sided Gerygone
- Rufous-sided Honeyeater
- Rufous-sided Pygmy Tyrant
- Rufous-sided Warbling Finch
- Rufous-tailed Antbird
- Rufous-tailed Antthrush
- Rufous-tailed Attila
- Rufous-tailed Babbler
- Rufous-tailed Fantail
- Rufous-tailed Flatbill
- Rufous-tailed Flycatcher
- Rufous-tailed Foliage-gleaner
- Rufous-tailed Hawk
- Rufous-tailed Hummingbird
- Rufous-tailed Jacamar
- Rufous-tailed Jungle Flycatcher
- Rufous-tailed Lark
- Rufous-tailed Palm Thrush
- Rufous-tailed Plantcutter
- Rufous-tailed Robin
- Rufous-tailed Scrub Robin
- Rufous-tailed Shama
- Rufous-tailed Stipplethroat
- Rufous-tailed Tailorbird
- Rufous-tailed Tyrant
- Rufous-tailed Weaver
- Rufous-tailed Xenops
- Rufous-thighed Hawk
- Rufous-thighed Kite
- Rufous-throated Antbird
- Rufous-throated Bronze Cuckoo
- Rufous-throated Dipper
- Rufous-throated Flycatcher
- Rufous-throated Fulvetta
- Rufous-throated Honeyeater
- Rufous-throated Partridge
- Rufous-throated Sapphire
- Rufous-throated Solitaire
- Rufous-throated Tanager
- Rufous-throated Wren-Babbler
- Rufous-vented Chachalaca
- Rufous-vented Grass Babbler
- Rufous-vented Ground Cuckoo
- Rufous-vented Laughingthrush
- Rufous-vented Niltava
- Rufous-vented Paradise Flycatcher
- Rufous-vented Tapaculo
- Rufous-vented Tit
- Rufous-vented Whitetip
- Rufous-vented Yuhina
- Rufous-webbed Brilliant
- Rufous-webbed Bush Tyrant
- Rufous-winged Antshrike
- Rufous-winged Antwren
- Rufous-winged Buzzard
- Rufous-winged Cisticola
- Rufous-winged Fulvetta
- Rufous-winged Ground Cuckoo
- Rufous-winged Illadopsis
- Rufous-winged Philentoma
- Rufous-winged Sparrow
- Rufous-winged Sunbird
- Rufous-winged Tanager
- Rufous-winged Tyrannulet
- Rufous-winged Woodpecker
- Running Coua
- Rüppell's Black Chat
- Rüppell's Korhaan
- Rüppell's Parrot
- Rüppell's Robin-Chat
- Rüppell's Starling
- Rüppell's Vulture
- Rüppell's Warbler
- Rüppell's Weaver
- Ruspoli's Turaco
- Russet Antshrike
- Russet Bush Warbler
- Russet Nightingale-Thrush
- Russet Sparrow
- Russet-backed Jungle Flycatcher
- Russet-backed Oropendola
- Russet-bellied Spinetail
- Russet-capped Tesia
- Russet-crowned Crake
- Russet-crowned Motmot
- Russet-crowned Quail-Dove
- Russet-crowned Warbler
- Russet-mantled Softtail
- Russet-naped Wood Rail
- Russet-tailed Thrush
- Russet-throated Puffbird
- Russet-winged Schiffornis
- Russet-winged Spadebill
- Rust-and-yellow Tanager
- Rustic Bunting
- Rusty Blackbird
- Rusty Bush Lark
- Rusty Flowerpiercer
- Rusty Laughingthrush
- Rusty Mouse-warbler
- Rusty Pitohui
- Rusty Sparrow
- Rusty Thicketbird
- Rusty Tinamou
- Rusty Whistler
- Rusty-backed Antwren
- Rusty-backed Monjita
- Rusty-backed Spinetail
- Rusty-barred Owl
- Rusty-bellied Brushfinch
- Rusty-bellied Shortwing
- Rusty-belted Tapaculo
- Rusty-breasted Antpitta
- Rusty-breasted Cuckoo
- Rusty-breasted Nunlet
- Rusty-breasted Whistler
- Rusty-breasted Wren-Babbler
- Rusty-browed Warbling Finch
- Rusty-capped Fulvetta
- Rusty-capped Kingfisher
- Rusty-cheeked Scimitar Babbler
- Rusty-collared Seedeater
- Rusty-crowned Babbler
- Rusty-crowned Ground Sparrow
- Rusty-crowned Tit-Spinetail
- Rusty-faced Parrot
- Rusty-flanked Crake
- Rusty-flanked Treecreeper
- Rusty-fronted Barwing
- Rusty-fronted Canastero
- Rusty-fronted Tody-Flycatcher
- Rusty-headed Spinetail
- Rusty-margined Flycatcher
- Rusty-margined Guan
- Rusty-naped Pitta
- Rusty-necked Piculet
- Rusty-tailed Flycatcher
- Rusty-throated Wren-Babbler
- Rusty-tinged Antpitta
- Rusty-vented Canastero
- Rusty-winged Barbtail
- Rusty-winged Starling
- Rwenzori Apalis
- Rwenzori Batis
- Rwenzori Double-collared Sunbird
- Rwenzori Hill Babbler
- Rwenzori Turaco
- Ryukyu Minivet
- Ryukyu Robin
- Ryukyu Scops Owl
- Ryukyu Wood Pigeon
- Sabine's Gull
- Sabine's Puffback
- Sabine's Spinetail
- Sabota Lark
- Sacred Kingfisher
- Sad Flycatcher
- Saddle-billed Stork
- Saffron Finch
- Saffron Siskin
- Saffron Toucanet
- Saffron-billed Sparrow
- Saffron-cowled Blackbird
- Saffron-crested Tyrant-Manakin
- Saffron-crowned Tanager
- Saffron-headed Parrot
- Sage Grouse
- Sage Thrasher
- Sagebrush Sparrow
- Sahel Bush Sparrow
- Sahel Paradise Whydah
- Saipan Reed Warbler
- Sakalava Rail
- Sakalava Weaver
- Saker Falcon
- Sakhalin Grasshopper Warbler
- Sakhalin Leaf Warbler
- Salim Ali's Swift
- Salinas Monjita
- Salmon-crested Cockatoo
- Saltmarsh Sparrow
- Salvadori's Antwren
- Salvadori's Eremomela
- Salvadori's Fig Parrot
- Salvadori's Nightjar
- Salvadori's Pheasant
- Salvadori's Seedeater
- Salvadori's Teal
- Salvin's Albatross
- Salvin's Curassow
- Salvin's Prion
- Samar Hornbill
- Samoan Fantail
- Samoan Flycatcher
- Samoan Starling
- Samoan Triller
- Samoan Whistler
- Samoan White-eye
- Samoan Woodhen
- San Andres Vireo
- San Blas Jay
- San Cristobal Flycatcher
- San Cristobal Mockingbird
- Sand Lark
- Sand Martin
- Sand Partridge
- Sand-colored Nighthawk
- Sanderling
- Sandhill Crane
- Sandstone Shrikethrush
- Sandwich Tern
- Sandy Gallito
- Sandy Scops Owl
- Sanford's Sea Eagle
- Sanford's White-eye
- Sangihe Hanging Parrot
- Sangihe Pitta
- Sangihe Scops Owl
- Sangihe Shrikethrush
- Sangihe White-eye
- Sangkar White-eye
- Santa Cruz Ground Dove
- Santa Cruz Shrikebill
- Santa Cruz White-eye
- Santa Marta Antbird
- Santa Marta Antpitta
- Santa Marta Blossomcrown
- Santa Marta Brushfinch
- Santa Marta Bush Tyrant
- Santa Marta Foliage-gleaner
- Santa Marta Mountain Tanager
- Santa Marta Parakeet
- Santa Marta Sabrewing
- Santa Marta Screech Owl
- Santa Marta Tapaculo
- Santa Marta Warbler
- Santa Marta Woodstar
- Santa Marta Wren
- Santarem Parakeet
- Sao Francisco Black Tyrant
- Sao Francisco Sparrow
- Sao Paulo Tyrannulet
- Sao Tome Fiscal
- Sao Tome Green Pigeon
- Sao Tome Grosbeak
- Sao Tome Ibis
- Sao Tome Olive Pigeon
- Sao Tome Oriole
- Sao Tome Paradise Flycatcher
- Sao Tome Prinia
- Sao Tome Scops Owl
- Sao Tome Shorttail
- Sao Tome Spinetail
- Sao Tome Thrush
- Sao Tome Weaver
- Sao Tome White-eye
- Sapayoa
- Sapphire Flycatcher
- Sapphire Quail-Dove
- Sapphire-bellied Hummingbird
- Sapphire-rumped Parrotlet
- Sapphire-spangled Emerald
- Sapphire-throated Hummingbird
- Sapphire-vented Puffleg
- Sardinian Warbler
- Sarus Crane
- Sassi's Olive Greenbul
- Satanic Nightjar
- Satin Bowerbird
- Satin Flycatcher
- Satin Swiftlet
- Saturnine Antshrike
- Satyr Tragopan
- Saunders's Gull
- Saunders's Tern
- Savanna Hawk
- Savanna Nightjar
- Savannah Sparrow
- Savile's Bustard
- Savi's Warbler
- Saw-billed Hermit
- Saxaul Sparrow
- Sayaca Tanager
- Say's Phoebe
- Scale-crested Pygmy Tyrant
- Scaled Antbird
- Scaled Antpitta
- Scaled Chachalaca
- Scaled Dove
- Scaled Flowerpiercer
- Scaled Fruiteater
- Scaled Ground Cuckoo
- Scaled Metaltail
- Scaled Piculet
- Scaled Pigeon
- Scaled Quail
- Scaled Spinetail
- Scaled Woodcreeper
- Scale-feathered Malkoha
- Scale-throated Earthcreeper
- Scale-throated Hermit
- Scallop-breasted Antpitta
- Scalloped Antbird
- Scalloped Woodcreeper
- Scaly Babbler
- Scaly Chatterer
- Scaly Ground Roller
- Scaly Laughingthrush
- Scaly Spurfowl
- Scaly Thrush
- Scaly-bellied Woodpecker
- Scaly-breasted Bulbul
- Scaly-breasted Cupwing
- Scaly-breasted Honeyeater
- Scaly-breasted Hummingbird
- Scaly-breasted Illadopsis
- Scaly-breasted Kingfisher
- Scaly-breasted Lorikeet
- Scaly-breasted Munia
- Scaly-breasted Thrasher
- Scaly-breasted Woodpecker
- Scaly-crowned Babbler
- Scaly-crowned Honeyeater
- Scaly-feathered Weaver
- Scaly-headed Parrot
- Scaly-naped Amazon
- Scaly-naped Pigeon
- Scaly-sided Merganser
- Scaly-throated Foliage-gleaner
- Scaly-throated Honeyguide
- Scaly-throated Leaftosser
- Scarce Swift
- Scarlet Finch
- Scarlet Flycatcher
- Scarlet Ibis
- Scarlet Macaw
- Scarlet Minivet
- Scarlet Myzomela
- Scarlet Robin
- Scarlet Tanager
- Scarlet-and-white Tanager
- Scarlet-backed Flowerpecker
- Scarlet-backed Woodpecker
- Scarlet-banded Barbet
- Scarlet-bellied Mountain Tanager
- Scarlet-breasted Dacnis
- Scarlet-breasted Flowerpecker
- Scarlet-breasted Fruit Dove
- Scarlet-breasted Fruiteater
- Scarlet-browed Tanager
- Scarlet-chested Parrot
- Scarlet-chested Sunbird
- Scarlet-collared Flowerpecker
- Scarlet-crowned Barbet
- Scarlet-faced Liocichla
- Scarlet-fronted Parakeet
- Scarlet-headed Blackbird
- Scarlet-headed Flowerpecker
- Scarlet-hooded Barbet
- Scarlet-horned Manakin
- Scarlet-rumped Cacique
- Scarlet-rumped Tanager
- Scarlet-rumped Trogon
- Scarlet-shouldered Parrotlet
- Scarlet-thighed Dacnis
- Scarlet-throated Tanager
- Scarlet-tufted Sunbird
- Schalow's Turaco
- Scheepmaker's Crowned Pigeon
- Schlegel's Asity
- Schlegel's Francolin
- Schneider's Pitta
- Schwartz's Antthrush
- Scimitar-billed Woodcreeper
- Scimitar-winged Piha
- Scintillant Hummingbird
- Scissor-tailed Flycatcher
- Scissor-tailed Hummingbird
- Scissor-tailed Kite
- Scissor-tailed Nightjar
- Sclater's Antwren
- Sclater's Crowned Pigeon
- Sclater's Lark
- Sclater's Monal
- Sclater's Myzomela
- Sclater's Nightingale-Thrush
- Sclater's Tyrannulet
- Sclater's Whistler
- Sclater's Wren
- Scopoli's Shearwater
- Scottish Crossbill
- Scott's Oriole
- Screaming Cowbird
- Screaming Piha
- Scribble-tailed Canastero
- Scripps's Murrelet
- Scrub Blackbird
- Scrub Euphonia
- Scrub Greenlet
- Scrub Honeyeater
- Scrub Tanager
- Scrubtit
- Seaside Sparrow
- Secretarybird
- Sedge Warbler
- Sedge Wren
- See-see Partridge
- Selva Cacique
- Semicollared Flycatcher
- Semicollared Hawk
- Semicollared Puffbird
- Semipalmated Plover
- Semipalmated Sandpiper
- Semiplumbeous Hawk
- Semper's Warbler
- Senegal Batis
- Senegal Coucal
- Senegal Eremomela
- Senegal Lapwing
- Senegal Parrot
- Senegal Thick-knee
- Sennar Penduline Tit
- Sentinel Rock Thrush
- Sepia-brown Wren
- Sepia-capped Flycatcher
- Sepik-Ramu Shrikethrush
- Seram Boobook
- Seram Bush Warbler
- Seram Friarbird
- Seram Golden Bulbul
- Seram Honeyeater
- Seram Imperial Pigeon
- Seram Mountain Pigeon
- Seram Swiftlet
- Seram Thrush
- Seram White-eye
- Serendib Scops Owl
- Serra Antwren
- Serra do Mar Tyrannulet
- Serra do Mar Tyrant-Manakin
- Serra Finch
- Seven-colored Tanager
- Seychelles Black Parrot
- Seychelles Blue Pigeon
- Seychelles Bulbul
- Seychelles Fody
- Seychelles Kestrel
- Seychelles Magpie-Robin
- Seychelles Paradise Flycatcher
- Seychelles Parakeet
- Seychelles Scops Owl
- Seychelles Sunbird
- Seychelles Swiftlet
- Seychelles Warbler
- Seychelles White-eye
- Shade Bush Warbler
- Shaft-tailed Whydah
- Sharp-beaked Ground Finch
- Sharpbill
- Sharp-billed Canastero
- Sharp-billed Treehunter
- Sharpe's Akalat
- Sharpe's Apalis
- Sharpe's Drongo
- Sharpe's Greenbul
- Sharpe's Longclaw
- Sharpe's Rosefinch
- Sharpe's Starling
- Sharp-shinned Hawk
- Sharp-tailed Grass Tyrant
- Sharp-tailed Grouse
- Sharp-tailed Ibis
- Sharp-tailed Sandpiper
- Sharp-tailed Starling
- Sharp-tailed Streamcreeper
- Shear-tailed Grey Tyrant
- Shelley's Crimsonwing
- Shelley's Eagle-Owl
- Shelley's Francolin
- Shelley's Greenbul
- Shelley's Oliveback
- Shelley's Sparrow
- Shelley's Starling
- Shelley's Sunbird
- Shikra
- Shining Bronze Cuckoo
- Shining Drongo
- Shining Flycatcher
- Shining Honeycreeper
- Shining Sunbeam
- Shining Sunbird
- Shining-blue Kingfisher
- Shining-green Hummingbird
- Shiny Cowbird
- Shiny Whistling Thrush
- Shoebill
- Shore Dotterel
- Short-bearded Honeyeater
- Short-billed Canastero
- Short-billed Dowitcher
- Short-billed Honeycreeper
- Short-billed Leaftosser
- Short-billed Miner
- Short-billed Minivet
- Short-billed Pigeon
- Short-billed Pipit
- Short-clawed Lark
- Short-crested Coquette
- Short-crested Flycatcher
- Short-crested Monarch
- Short-eared Owl
- Short-legged Ground Roller
- Short-tailed Albatross
- Short-tailed Antthrush
- Short-tailed Babbler
- Short-tailed Emerald
- Short-tailed Field Tyrant
- Short-tailed Finch
- Short-tailed Grasswren
- Short-tailed Hawk
- Short-tailed Lark
- Short-tailed Nighthawk
- Short-tailed Paradigalla
- Short-tailed Parrot
- Short-tailed Parrotbill
- Short-tailed Pipit
- Short-tailed Pygmy Tyrant
- Short-tailed Scimitar Babbler
- Short-tailed Shearwater
- Short-tailed Starling
- Short-tailed Swift
- Short-tailed Woodstar
- Short-toed Coucal
- Short-toed Rock Thrush
- Short-toed Snake Eagle
- Short-toed Treecreeper
- Short-winged Cisticola
- Shovel-billed Kookaburra
- Shrike-like Tanager
- Shy Albatross
- Shy Heathwren
- Siamese Fireback
- Siamese Partridge
- Siau Pitta
- Siau Scops Owl
- Siberian Accentor
- Siberian Blue Robin
- Siberian Crane
- Siberian Grouse
- Siberian Jay
- Siberian Nuthatch
- Siberian Rubythroat
- Siberian Stonechat
- Siberian Thrush
- Sibilant Sirystes
- Sichuan Bush Warbler
- Sichuan Jay
- Sichuan Leaf Warbler
- Sichuan Partridge
- Sichuan Thrush
- Sichuan Tit
- Sichuan Treecreeper
- Sickle-billed Vanga
- Sickle-winged Chat
- Sickle-winged Guan
- Sickle-winged Nightjar
- Sick's Swift
- Sierra Leone Prinia
- Sierra Madre Ground Warbler
- Sierra Madre Sparrow
- Sierra Nevada Brushfinch
- Sierran Elaenia
- Sikkim Treecreeper
- Sikkim Wedge-billed Babbler
- Silky-tailed Nightjar
- Sillem's Mountain Finch
- Silver Gull
- Silver Oriole
- Silver Pheasant
- Silver Teal
- Silver-backed Butcherbird
- Silver-backed Needletail
- Silver-backed Tanager
- Silver-beaked Tanager
- Silverbird
- Silver-breasted Broadbill
- Silver-capped Fruit Dove
- Silver-crowned Friarbird
- Silver-eared Honeyeater
- Silver-eared Laughingthrush
- Silver-eared Mesia
- Silvered Antbird
- Silvereye
- Silver-rumped Spinetail
- Silver-throated Bushtit
- Silver-throated Tanager
- Silver-tipped Imperial Pigeon
- Silvery Grebe
- Silvery Pigeon
- Silvery-cheeked Antshrike
- Silvery-cheeked Hornbill
- Silvery-flanked Antwren
- Silvery-fronted Tapaculo
- Silvery-throated Jay
- Silvery-throated Spinetail
- Simeulue Scops Owl
- Simple Greenbul
- Sinai Rosefinch
- Sinaloa Crow
- Sinaloa Martin
- Sinaloa Wren
- Sincora Antwren
- Sind Sparrow
- Sind Woodpecker
- Singing Bush Lark
- Singing Cisticola
- Singing Honeyeater
- Singing Quail
- Singing Starling
- Sira Barbet
- Sira Curassow
- Sira Tanager
- Sirkeer Malkoha
- Sjöstedt's Barred Owlet
- Sjöstedt's Greenbul
- Sladen's Barbet
- Slate-colored Antbird
- Slate-colored Boubou
- Slate-colored Fox Sparrow
- Slate-colored Grosbeak
- Slate-colored Hawk
- Slate-colored Seedeater
- Slate-colored Solitaire
- Slate-throated Gnatcatcher
- Slate-throated Whitestart
- Slaty Antwren
- Slaty Becard
- Slaty Bristlefront
- Slaty Brushfinch
- Slaty Bunting
- Slaty Cuckooshrike
- Slaty Egret
- Slaty Elaenia
- Slaty Finch
- Slaty Flowerpiercer
- Slaty Gnateater
- Slaty Monarch
- Slaty Robin
- Slaty Spinetail
- Slaty Tanager
- Slaty Vireo
- Slaty-backed Chat-Tyrant
- Slaty-backed Flycatcher
- Slaty-backed Forest Falcon
- Slaty-backed Forktail
- Slaty-backed Gull
- Slaty-backed Hemispingus
- Slaty-backed Jungle Flycatcher
- Slaty-backed Nightingale-Thrush
- Slaty-backed Thornbill
- Slaty-backed Thrush
- Slaty-bellied Tesia
- Slaty-blue Flycatcher
- Slaty-breasted Rail
- Slaty-breasted Tinamou
- Slaty-breasted Wood Rail
- Slaty-capped Flycatcher
- Slaty-capped Shrike-Vireo
- Slaty-crowned Antpitta
- Slaty-headed Longbill
- Slaty-headed Parakeet
- Slaty-headed Tody-Flycatcher
- Slaty-legged Crake
- Slaty-mantled Goshawk
- Slaty-tailed Trogon
- Slaty-winged Foliage-gleaner
- Slender Antbird
- Slender Sheartail
- Slender-billed Babbler
- Slender-billed Crow
- Slender-billed Curlew
- Slender-billed Finch
- Slender-billed Flufftail
- Slender-billed Grackle
- Slender-billed Greenbul
- Slender-billed Gull
- Slender-billed Inezia
- Slender-billed Kite
- Slender-billed Miner
- Slender-billed Oriole
- Slender-billed Parakeet
- Slender-billed Prion
- Slender-billed Scimitar Babbler
- Slender-billed Starling
- Slender-billed Thornbill
- Slender-billed Vulture
- Slender-billed Weaver
- Slender-billed White-eye
- Slender-billed Xenops
- Slender-footed Tyrannulet
- Slender-tailed Nightjar
- Slender-tailed Woodstar
- Small Ground Finch
- Small Lifou White-eye
- Small Minivet
- Small Niltava
- Small Pratincole
- Small Tree Finch
- Small-billed Elaenia
- Small-billed Tinamou
- Small-headed Elaenia
- Smew
- Smith's Longspur
- Smoke-colored Pewee
- Smoky Bush Tyrant
- Smoky Robin
- Smoky Warbler
- Smoky-brown Woodpecker
- Smoky-fronted Tody-Flycatcher
- Smooth-billed Ani
- Snail Kite
- Snail-eating Coua
- Snares Penguin
- Snares Snipe
- Snethlage's Antpitta
- Snethlage's Tody-Tyrant
- Snoring Rail
- Snow Bunting
- Snow Goose
- Snow Mountain Quail
- Snow Mountain Robin
- Snow Partridge
- Snow Petrel
- Snow Pigeon
- Snowcap
- Snow-capped Manakin
- Snowy Cotinga
- Snowy Egret
- Snowy Owl
- Snowy Plover
- Snowy Sheathbill
- Snowy-bellied Hummingbird
- Snowy-browed Flycatcher
- Snowy-cheeked Laughingthrush
- Snowy-crowned Robin-Chat
- Snowy-crowned Tern
- Snowy-throated Babbler
- Snowy-throated Kingbird
- Sociable Lapwing
- Sociable Weaver
- Social Flycatcher
- Society Kingfisher
- Socorro Dove
- Socorro Mockingbird
- Socorro Parakeet
- Socorro Wren
- Socotra Bunting
- Socotra Buzzard
- Socotra Cisticola
- Socotra Cormorant
- Socotra Golden-winged Grosbeak
- Socotra Scops Owl
- Socotra Sparrow
- Socotra Starling
- Socotra Sunbird
- Socotra Warbler
- Socotra White-eye
- Soft-plumaged Petrel
- Sokoke Pipit
- Sokoke Scops Owl
- Solitary Cacique
- Solitary Eagle
- Solitary Sandpiper
- Solitary Snipe
- Solitary Tinamou
- Solomons Boobook
- Solomons Cockatoo
- Solomons Cuckooshrike
- Solomons Frogmouth
- Solomons Monarch
- Solomons Nightjar
- Solomons Robin
- Solomons White-eye
- Somali Bee-eater
- Somali Bulbul
- Somali Bunting
- Somali Courser
- Somali Crombec
- Somali Crow
- Somali Fiscal
- Somali Golden-winged Grosbeak
- Somali Lark
- Somali Ostrich
- Somali Pigeon
- Somali Short-toed Lark
- Somali Sparrow
- Somali Starling
- Somali Thrush
- Somali Wheatear
- Sombre Greenbul
- Sombre Hummingbird
- Sombre Kingfisher
- Sombre Nightjar
- Sombre Pigeon
- Sombre Rock Chat
- Sombre Tit
- Song Parrot
- Song Sparrow
- Song Thrush
- Song Wren
- Sooretama Slaty Antshrike
- Sooty Albatross
- Sooty Ant Tanager
- Sooty Antbird
- Sooty Babbler
- Sooty Barbet
- Sooty Barbthroat
- Sooty Bushtit
- Sooty Chat
- Sooty Falcon
- Sooty Flycatcher
- Sooty Fox Sparrow
- Sooty Grassquit
- Sooty Grouse
- Sooty Gull
- Sooty Honeyeater
- Sooty Myzomela
- Sooty Oystercatcher
- Sooty Shearwater
- Sooty Shrikethrush
- Sooty Swift
- Sooty Tern
- Sooty Thicket Fantail
- Sooty Thrush
- Sooty Tyrannulet
- Sooty Woodpecker
- Sooty-capped Babbler
- Sooty-capped Bush Tanager
- Sooty-capped Hermit
- Sooty-capped Puffbird
- Sooty-crowned Flycatcher
- Sooty-faced Finch
- Sooty-fronted Spinetail
- Sooty-headed Bulbul
- Sooty-headed Tyrannulet
- Sooty-headed Wren
- Sora
- Souimanga Sunbird
- South African Cliff Swallow
- South African Shelduck
- South American Painted-snipe
- South American Snipe
- South American Tern
- South Georgia Diving Petrel
- South Georgia Pipit
- South Georgia Shag
- South Island Kokako
- South Island Oystercatcher
- South Island Piopio
- South Island Robin
- South Island Saddleback
- South Island Snipe
- South Island Takahe
- South Melanesian Cuckooshrike
- South Moluccan Pitta
- South Pare White-eye
- South Polar Skua
- Southern Antpipit
- Southern Bald Ibis
- Southern Banded Snake Eagle
- Southern Beardless Tyrannulet
- Southern Bentbill
- Southern Black Flycatcher
- Southern Black Korhaan
- Southern Black Tit
- Southern Boubou
- Southern Bristle Tyrant
- Southern Brown Kiwi
- Southern Brown-throated Weaver
- Southern Carmine Bee-eater
- Southern Cassowary
- Southern Chestnut-tailed Antbird
- Southern Citril
- Southern Crested Caracara
- Southern Double-collared Sunbird
- Southern Emu-wren
- Southern Fiscal
- Southern Fulmar
- Southern Giant Petrel
- Southern Grey-headed Sparrow
- Southern Grosbeak-Canary
- Southern Ground Hornbill
- Southern Hill Myna
- Southern Hyliota
- Southern Lapwing
- Southern Marquesan Reed Warbler
- Southern Martin
- Southern Masked Weaver
- Southern Mealy Amazon
- Southern Mountain Cacique
- Southern Nightingale-Wren
- Southern Pied Babbler
- Southern Pochard
- Southern Red Bishop
- Southern Red-billed Hornbill
- Southern Rockhopper Penguin
- Southern Rough-winged Swallow
- Southern Royal Albatross
- Southern Screamer
- Southern Scrub Flycatcher
- Southern Scrub Robin
- Southern Shrikebill
- Southern Silvery Kingfisher
- Southern Tchagra
- Southern Variable Pitohui
- Southern White-crowned Shrike
- Southern Whiteface
- Southern White-faced Owl
- Southern White-fringed Antwren
- Southern Yellow White-eye
- Southern Yellow-billed Hornbill
- Southern Yellowthroat
- Souza's Shrike
- Spangle-cheeked Tanager
- Spangled Coquette
- Spangled Cotinga
- Spangled Drongo
- Spangled Honeyeater
- Spangled Kookaburra
- Spanish Imperial Eagle
- Spanish Sparrow
- Sparkling Violetear
- Sparkling-tailed Woodstar
- Speckle-breasted Antpitta
- Speckle-breasted Woodpecker
- Speckle-breasted Wren
- Speckle-chested Piculet
- Speckled Antshrike
- Speckled Boobook
- Speckled Chachalaca
- Speckled Hummingbird
- Speckled Mourner
- Speckled Mousebird
- Speckled Piculet
- Speckled Pigeon
- Speckled Rail
- Speckled Reed Warbler
- Speckled Spinetail
- Speckled Tanager
- Speckled Tinkerbird
- Speckled Warbler
- Speckled Wood Pigeon
- Speckle-fronted Weaver
- Speckle-throated Woodpecker
- Spectacled Barwing
- Spectacled Bristle Tyrant
- Spectacled Bulbul
- Spectacled Eider
- Spectacled Finch
- Spectacled Flowerpecker
- Spectacled Fulvetta
- Spectacled Guillemot
- Spectacled Imperial Pigeon
- Spectacled Monarch
- Spectacled Owl
- Spectacled Parrotbill
- Spectacled Parrotlet
- Spectacled Petrel
- Spectacled Prickletail
- Spectacled Spiderhunter
- Spectacled Tern
- Spectacled Tetraka
- Spectacled Thrush
- Spectacled Tyrannulet
- Spectacled Tyrant
- Spectacled Warbler
- Spectacled Weaver
- Spectacled Whitestart
- Speke's Weaver
- Spice Imperial Pigeon
- Spike-heeled Lark
- Spillmann's Tapaculo
- Spinifex Pigeon
- Spinifexbird
- Spiny Babbler
- Spiny-cheeked Honeyeater
- Spix's Guan
- Spix's Macaw
- Spix's Spinetail
- Spix's Warbling Antbird
- Spix's Woodcreeper
- Splendid Astrapia
- Splendid Fairywren
- Splendid Starling
- Splendid Sunbird
- Spoon-billed Sandpiper
- Spot-backed Antbird
- Spot-backed Antshrike
- Spot-backed Antwren
- Spot-bellied Bobwhite
- Spot-bellied Eagle-Owl
- Spot-billed Ground Tyrant
- Spot-billed Pelican
- Spot-billed Toucanet
- Spot-breasted Antvireo
- Spot-breasted Heleia
- Spot-breasted Ibis
- Spot-breasted Lapwing
- Spot-breasted Laughingthrush
- Spot-breasted Oriole
- Spot-breasted Parrotbill
- Spot-breasted Scimitar Babbler
- Spot-breasted Thornbird
- Spot-breasted Woodpecker
- Spot-breasted Wren
- Spot-crowned Antvireo
- Spot-crowned Barbet
- Spot-crowned Euphonia
- Spot-crowned Woodcreeper
- Spot-flanked Barbet
- Spot-flanked Gallinule
- Spot-fronted Swift
- Spotless Crake
- Spotless Starling
- Spot-necked Babbler
- Spot-necked Bulbul
- Spot-tailed Antwren
- Spot-tailed Nightjar
- Spot-tailed Sparrowhawk
- Spotted Antbird
- Spotted Antpitta
- Spotted Bamboowren
- Spotted Barbtail
- Spotted Berrypecker
- Spotted Bowerbird
- Spotted Bush Warbler
- Spotted Buttonquail
- Spotted Catbird
- Spotted Crake
- Spotted Crocias
- Spotted Dove
- Spotted Eagle-Owl
- Spotted Elachura
- Spotted Fantail
- Spotted Flycatcher
- Spotted Forktail
- Spotted Green Pigeon
- Spotted Greenbul
- Spotted Ground Thrush
- Spotted Harrier
- Spotted Honeyeater
- Spotted Honeyguide
- Spotted Imperial Pigeon
- Spotted Jewel-babbler
- Spotted Kestrel
- Spotted Laughingthrush
- Spotted Nightjar
- Spotted Nothura
- Spotted Nutcracker
- Spotted Owl
- Spotted Owlet
- Spotted Palm Thrush
- Spotted Pardalote
- Spotted Piculet
- Spotted Puffbird
- Spotted Quail-thrush
- Spotted Rail
- Spotted Redshank
- Spotted Sandgrouse
- Spotted Sandpiper
- Spotted Scrubwren
- Spotted Shag
- Spotted Tanager
- Spotted Thick-knee
- Spotted Thrush-Babbler
- Spotted Tody-Flycatcher
- Spotted Towhee
- Spotted Whistling Duck
- Spotted Wood Kingfisher
- Spotted Wood Owl
- Spotted Wood Quail
- Spotted Woodcreeper
- Spotted Wren
- Spot-throat
- Spot-throated Babbler
- Spot-throated Flameback
- Spot-throated Hummingbird
- Spot-throated Woodcreeper
- Spot-winged Antbird
- Spot-winged Antshrike
- Spot-winged Falconet
- Spot-winged Grosbeak
- Spot-winged Monarch
- Spot-winged Parrotlet
- Spot-winged Pigeon
- Spot-winged Rosefinch
- Spot-winged Starling
- Spot-winged Thrush
- Spot-winged Wood Quail
- Sprague's Pipit
- Spruce Grouse
- Spur-winged Goose
- Spur-winged Lapwing
- Squacco Heron
- Squamate Antbird
- Square-tailed Bulbul
- Square-tailed Drongo-Cuckoo
- Square-tailed Kite
- Square-tailed Nightjar
- Square-tailed Saw-wing
- Squatter Pigeon
- Squirrel Cuckoo
- Sri Lanka Bay Owl
- Sri Lanka Blue Magpie
- Sri Lanka Bush Warbler
- Sri Lanka Drongo
- Sri Lanka Frogmouth
- Sri Lanka Green Pigeon
- Sri Lanka Grey Hornbill
- Sri Lanka Hanging Parrot
- Sri Lanka Hill Myna
- Sri Lanka Junglefowl
- Sri Lanka Scimitar Babbler
- Sri Lanka Spurfowl
- Sri Lanka Swallow
- Sri Lanka Thrush
- Sri Lanka Whistling Thrush
- Sri Lanka White-eye
- Sri Lanka Wood Pigeon
- Sri Lanka Woodshrike
- St. Helena Crake
- St. Helena Cuckoo
- St. Helena Hoopoe
- St. Helena Petrel
- St. Helena Plover
- St. Helena Rail
- St. Lucia Amazon
- St. Lucia Black Finch
- St. Lucia Oriole
- St. Lucia Warbler
- St. Vincent Amazon
- Standardwing
- Standard-winged Nightjar
- Star Finch
- Star-chested Treerunner
- Stark's Lark
- Starred Wood Quail
- Starry Owlet-nightjar
- Star-spotted Nightjar
- Star-throated Antwren
- Steel-blue Flycatcher
- Steel-blue Whydah
- Steely-vented Hummingbird
- Steere's Liocichla
- Steinbach's Canastero
- Stejneger's Petrel
- Stejneger's Scoter
- Stejneger's Stonechat
- Steller's Eider
- Steller's Jay
- Steller's Sea Eagle
- Stephan's Emerald Dove
- Stephen's Lorikeet
- Steppe Eagle
- Stierling's Woodpecker
- Stierling's Wren-Warbler
- Stiles's Tapaculo
- Stilt Sandpiper
- Stitchbird
- Stock Dove
- Stolid Flycatcher
- Stone Partridge
- Stork-billed Kingfisher
- Storm's Stork
- Stout Cisticola
- Stout-billed Cinclodes
- Stout-billed Cuckooshrike
- Straight-billed Earthcreeper
- Straight-billed Hermit
- Straight-billed Reedhaunter
- Straight-billed Woodcreeper
- Straneck's Tyrannulet
- Strange Weaver
- Strange-tailed Tyrant
- Straw-backed Tanager
- Straw-headed Bulbul
- Straw-necked Ibis
- Straw-tailed Whydah
- Streak-backed Antshrike
- Streak-backed Canastero
- Streak-backed Oriole
- Streak-backed Tit-Spinetail
- Streak-breasted Bulbul
- Streak-breasted Fantail
- Streak-breasted Honeyeater
- Streak-breasted Jungle Flycatcher
- Streak-breasted Scimitar Babbler
- Streak-breasted Treehunter
- Streak-breasted Woodpecker
- Streak-capped Antwren
- Streak-capped Spinetail
- Streak-capped Treehunter
- Streak-chested Antpitta
- Streak-crowned Antvireo
- Streak-eared Bulbul
- Streaked Barwing
- Streaked Berrypecker
- Streaked Bowerbird
- Streaked Bulbul
- Streaked Fantail
- Streaked Flycatcher
- Streaked Laughingthrush
- Streaked Rosefinch
- Streaked Saltator
- Streaked Scrub Warbler
- Streaked Shearwater
- Streaked Spiderhunter
- Streaked Tuftedcheek
- Streaked Weaver
- Streaked Wren-Babbler
- Streaked Xenops
- Streak-fronted Thornbird
- Streak-headed Antbird
- Streak-headed Honeyeater
- Streak-headed Mannikin
- Streak-headed White-eye
- Streak-headed Woodcreeper
- Streak-necked Flycatcher
- Streak-throated Barwing
- Streak-throated Bush Tyrant
- Streak-throated Canastero
- Streak-throated Hermit
- Streak-throated Swallow
- Streak-throated Woodpecker
- Streaky Seedeater
- Streaky-breasted Flufftail
- Streaky-breasted Spiderhunter
- Streaky-headed Seedeater
- Streamer-tailed Tyrant
- Stresemann's Bristlefront
- Stresemann's Bushcrow
- Striated Antbird
- Striated Antthrush
- Striated Babbler
- Striated Bulbul
- Striated Caracara
- Striated Earthcreeper
- Striated Fieldwren
- Striated Grassbird
- Striated Grasswren
- Striated Heron
- Striated Laughingthrush
- Striated Lorikeet
- Striated Pardalote
- Striated Softtail
- Striated Starling
- Striated Swallow
- Striated Thornbill
- Striated Wren-Babbler
- Striated Yuhina
- Strickland's Woodpecker
- Striolated Bunting
- Striolated Manakin
- Striolated Tit-Spinetail
- Stripe-backed Antbird
- Stripe-backed Bittern
- Stripe-backed Wren
- Stripe-billed Aracari
- Stripe-breasted Rhabdornis
- Stripe-breasted Spinetail
- Stripe-breasted Starthroat
- Stripe-breasted Tit
- Stripe-breasted Woodpecker
- Stripe-breasted Wren
- Stripe-capped Sparrow
- Stripe-cheeked Greenbul
- Stripe-cheeked Woodpecker
- Stripe-chested Antwren
- Stripe-crowned Spinetail
- Striped Crake
- Striped Cuckoo
- Striped Flowerpecker
- Striped Flufftail
- Striped Honeyeater
- Striped Kingfisher
- Striped Laughingthrush
- Striped Owl
- Striped Pipit
- Striped Sparrow
- Striped Treehunter
- Striped Woodcreeper
- Striped Woodpecker
- Striped Wren-Babbler
- Stripe-faced Greenbul
- Stripe-faced Wood Quail
- Stripe-headed Antpitta
- Stripe-headed Rhabdornis
- Stripe-headed Sparrow
- Stripe-necked Tody-Tyrant
- Stripe-tailed Hummingbird
- Stripe-tailed Yellow Finch
- Stripe-throated Bulbul
- Stripe-throated Hermit
- Stripe-throated Jery
- Stripe-throated Wren
- Stripe-throated Yuhina
- Strong-billed Honeyeater
- Strong-billed Woodcreeper
- Stubble Quail
- Stub-tailed Antbird
- Stub-tailed Spadebill
- Stuhlmann's Starling
- Styan's Bulbul
- Styan's Grasshopper Warbler
- Stygian Owl
- Subantarctic Shearwater
- Subantarctic Snipe
- Subdesert Brush Warbler
- Subdesert Mesite
- Subtropical Cacique
- Subtropical Doradito
- Subtropical Pygmy Owl
- Sucre Antpitta
- Sudan Golden Sparrow
- Suiriri Flycatcher
- Sula Cicadabird
- Sula Cuckoo-Dove
- Sula Dwarf Kingfisher
- Sula Fruit Dove
- Sula Hanging Parrot
- Sula Jungle Flycatcher
- Sula Megapode
- Sula Pitta
- Sula Scops Owl
- Sulawesi Babbler
- Sulawesi Blue Flycatcher
- Sulawesi Bush Warbler
- Sulawesi Cicadabird
- Sulawesi Cuckoo
- Sulawesi Drongo
- Sulawesi Dwarf Kingfisher
- Sulawesi Fantail
- Sulawesi Goshawk
- Sulawesi Ground Dove
- Sulawesi Hawk-Eagle
- Sulawesi Hornbill
- Sulawesi Leaf Warbler
- Sulawesi Masked Owl
- Sulawesi Myna
- Sulawesi Myzomela
- Sulawesi Nightjar
- Sulawesi Pitta
- Sulawesi Pygmy Woodpecker
- Sulawesi Scops Owl
- Sulawesi Serpent Eagle
- Sulawesi Streaked Flycatcher
- Sulawesi Swiftlet
- Sulawesi Thrush
- Sulawesi Woodcock
- Sulphur-bearded Reedhaunter
- Sulphur-bellied Bulbul
- Sulphur-bellied Flycatcher
- Sulphur-bellied Tyrannulet
- Sulphur-bellied Tyrant-Manakin
- Sulphur-bellied Warbler
- Sulphur-billed Nuthatch
- Sulphur-breasted Myzomela
- Sulphur-breasted Parakeet
- Sulphur-breasted Warbler
- Sulphur-crested Cockatoo
- Sulphur-rumped Myiobius
- Sulphur-rumped Tanager
- Sulphur-throated Finch
- Sulphur-vented Whistler
- Sulphur-winged Parakeet
- Sulphury Flycatcher
- Sultan Tit
- Sultan's Cuckoo-Dove
- Sulu Bleeding-heart
- Sulu Hawk-Owl
- Sulu Hornbill
- Sulu Pygmy Woodpecker
- Sumatran Babbler
- Sumatran Cochoa
- Sumatran Drongo
- Sumatran Frogmouth
- Sumatran Green Pigeon
- Sumatran Ground Cuckoo
- Sumatran Laughingthrush
- Sumatran Leafbird
- Sumatran Partridge
- Sumatran Treepie
- Sumatran Trogon
- Sumatran Wren-Babbler
- Sumba Boobook
- Sumba Brown Flycatcher
- Sumba Buttonquail
- Sumba Flycatcher
- Sumba Green Pigeon
- Sumba Hornbill
- Sumba Myzomela
- Sumichrast's Wren
- Summer Tanager
- Sun Lark
- Sun Parakeet
- Sunbittern
- Sunda Blue Flycatcher
- Sunda Bulbul
- Sunda Bush Warbler
- Sunda Coucal
- Sunda Cuckoo
- Sunda Cuckooshrike
- Sunda Forktail
- Sunda Frogmouth
- Sunda Laughingthrush
- Sunda Minivet
- Sunda Owlet
- Sunda Pygmy Woodpecker
- Sunda Robin
- Sunda Scops Owl
- Sunda Teal
- Sunda Thrush
- Sunda Warbler
- Sungrebe
- Sunset Lorikeet
- Superb Fairywren
- Superb Fruit Dove
- Superb Lyrebird
- Superb Parrot
- Superb Pitta
- Superb Starling
- Superb Sunbird
- Superciliaried Hemispingus
- Superciliated Wren
- Surf Scoter
- Surfbird
- Surucua Trogon
- Swahili Sparrow
- Swainson's Flycatcher
- Swainson's Hawk
- Swainson's Sparrow
- Swainson's Spurfowl
- Swainson's Thrush
- Swainson's Warbler
- Swallow Tanager
- Swallow-tailed Bee-eater
- Swallow-tailed Cotinga
- Swallow-tailed Gull
- Swallow-tailed Hummingbird
- Swallow-tailed Kite
- Swallow-tailed Nightjar
- Swallow-winged Puffbird
- Swamp Boubou
- Swamp Flycatcher
- Swamp Francolin
- Swamp Grass Babbler
- Swamp Harrier
- Swamp Nightjar
- Swamp Palm Bulbul
- Swamp Sparrow
- Swan Goose
- Swee Waxbill
- Swierstra's Spurfowl
- Swift Parrot
- Swinhoe's Minivet
- Swinhoe's Pheasant
- Swinhoe's Prinia
- Swinhoe's Rail
- Swinhoe's Snipe
- Swinhoe's Storm Petrel
- Swinhoe's White-eye
- Sword-billed Hummingbird
- Swynnerton's Robin
- Sykes's Lark
- Sykes's Nightjar
- Sykes's Warbler
- Syrian Serin
- Syrian Woodpecker
- Szechenyi's Monal-Partridge
- Tablas Drongo
- Tablas Fantail
- Tacarcuna Bush Tanager
- Tacarcuna Tapaculo
- Tacarcuna Warbler
- Tacarcuna Wood Quail
- Tacazze Sunbird
- Tachira Antpitta
- Taczanowski's Ground Tyrant
- Taczanowski's Tinamou
- Tagula Butcherbird
- Tagula Honeyeater
- Tagula Shrikethrush
- Tagula White-eye
- Tahiti Crake
- Tahiti Monarch
- Tahiti Petrel
- Tahiti Rail
- Tahiti Reed Warbler
- Tahiti Sandpiper
- Tahiti Swiftlet
- Taiga Bean Goose
- Taiga Flycatcher
- Taita Apalis
- Taita Falcon
- Taita Fiscal
- Taita Thrush
- Taita White-eye
- Taiwan Bamboo Partridge
- Taiwan Barbet
- Taiwan Barwing
- Taiwan Blue Magpie
- Taiwan Bush Warbler
- Taiwan Cupwing
- Taiwan Fulvetta
- Taiwan Hwamei
- Taiwan Partridge
- Taiwan Rosefinch
- Taiwan Scimitar Babbler
- Taiwan Shortwing
- Taiwan Whistling Thrush
- Taiwan Yuhina
- Talamanca Hummingbird
- Talaud Bush-hen
- Talaud Kingfisher
- Talaud Rail
- Taliabu Bush Warbler
- Taliabu Fantail
- Taliabu Masked Owl
- Taliabu Myzomela
- Tamarugo Conebill
- Tamaulipas Crow
- Tamaulipas Pygmy Owl
- Tambourine Dove
- Tana River Cisticola
- Tanager Finch
- Tanahjampea Blue Flycatcher
- Tan-capped Catbird
- Tanimbar Boobook
- Tanimbar Bush Warbler
- Tanimbar Corella
- Tanimbar Cuckoo-Dove
- Tanimbar Flycatcher
- Tanimbar Friarbird
- Tanimbar Megapode
- Tanimbar Oriole
- Tanimbar Starling
- Tanna Fruit Dove
- Tanna Ground Dove
- Tanzanian Masked Weaver
- Tanzanian Red-billed Hornbill
- Tapajos Antpitta
- Tapajos Fire-eye
- Tapajos Hermit
- Tarim Babbler
- Tasman Starling
- Tasmanian Nativehen
- Tasmanian Scrubwren
- Tasmanian Thornbill
- Tatama Tapaculo
- Tataupa Tinamou
- Taveta Weaver
- Taveuni Silktail
- Tawitawi Brown Dove
- Tawny Antpitta
- Tawny Eagle
- Tawny Fish Owl
- Tawny Frogmouth
- Tawny Grassbird
- Tawny Owl
- Tawny Pipit
- Tawny Straightbill
- Tawny Tit-Spinetail
- Tawny-backed Fantail
- Tawny-bellied Babbler
- Tawny-bellied Hermit
- Tawny-bellied Screech Owl
- Tawny-bellied Seedeater
- Tawny-breasted Honeyeater
- Tawny-breasted Myiobius
- Tawny-breasted Parrotfinch
- Tawny-breasted Tinamou
- Tawny-breasted Wren-Babbler
- Tawny-browed Owl
- Tawny-capped Euphonia
- Tawny-chested Flycatcher
- Tawny-collared Nightjar
- Tawny-crested Tanager
- Tawny-crowned Greenlet
- Tawny-crowned Honeyeater
- Tawny-crowned Pygmy Tyrant
- Tawny-faced Gnatwren
- Tawny-faced Quail
- Tawny-flanked Prinia
- Tawny-headed Swallow
- Tawny-rumped Tyrannulet
- Tawny-shouldered Blackbird
- Tawny-throated Dotterel
- Tawny-throated Leaftosser
- Tawny-tufted Toucanet
- Tawny-winged Woodcreeper
- Teardrop White-eye
- Temminck's Babbler
- Temminck's Courser
- Temminck's Lark
- Temminck's Seedeater
- Temminck's Stint
- Temminck's Sunbird
- Temminck's Tragopan
- Temotu Whistler
- Tenerife Blue Chaffinch
- Tenggara Swiftlet
- Tennessee Warbler
- Tepui Antpitta
- Tepui Brushfinch
- Tepui Elaenia
- Tepui Flycatcher
- Tepui Foliage-gleaner
- Tepui Goldenthroat
- Tepui Parrotlet
- Tepui Spinetail
- Tepui Swift
- Tepui Tinamou
- Tepui Toucanet
- Tepui Vireo
- Tepui Whitestart
- Tepui Wren
- Terek Sandpiper
- Terrestrial Brownbul
- Tessmann's Flycatcher
- Thamnornis
- Thekla's Lark
- Thick-billed Cuckoo
- Thick-billed Euphonia
- Thick-billed Flowerpecker
- Thick-billed Fox Sparrow
- Thick-billed Grasswren
- Thick-billed Green Pigeon
- Thick-billed Ground Dove
- Thick-billed Ground Pigeon
- Thick-billed Heleia
- Thick-billed Honeyguide
- Thick-billed Kingbird
- Thick-billed Lark
- Thick-billed Miner
- Thick-billed Murre
- Thick-billed Parrot
- Thick-billed Raven
- Thick-billed Saltator
- Thick-billed Seed Finch
- Thick-billed Seedeater
- Thick-billed Siskin
- Thick-billed Spiderhunter
- Thick-billed Vireo
- Thick-billed Warbler
- Thick-billed Weaver
- Thicket Antpitta
- Thicket Tinamou
- Thorn-tailed Rayadito
- Three-banded Courser
- Three-banded Plover
- Three-banded Rosefinch
- Three-banded Warbler
- Three-streaked Tchagra
- Three-striped Flycatcher
- Three-striped Hemispingus
- Three-striped Warbler
- Three-toed Jacamar
- Three-toed Parrotbill
- Three-toed Swiftlet
- Three-wattled Bellbird
- Thrush Nightingale
- Thrush-like Antpitta
- Thrush-like Wren
- Thyolo Alethe
- Tibetan Babax
- Tibetan Blackbird
- Tibetan Bunting
- Tibetan Eared Pheasant
- Tibetan Lark
- Tibetan Partridge
- Tibetan Rosefinch
- Tibetan Sandgrouse
- Tibetan Serin
- Tibetan Snowcock
- Tibetan Snowfinch
- Tickell's Blue Flycatcher
- Tickell's Brown Hornbill
- Tickell's Leaf Warbler
- Tickell's Thrush
- Ticking Doradito
- Tiger Shrike
- Timberline Wren
- Timneh Parrot
- Timor Blue Flycatcher
- Timor Boobook
- Timor Cuckoo-Dove
- Timor Friarbird
- Timor Green Pigeon
- Timor Imperial Pigeon
- Timor Leaf Warbler
- Timor Sparrow
- Timor Stubtail
- Tinian Monarch
- Tinkling Cisticola
- Tiny Cisticola
- Tiny Hawk
- Tiny Sunbird
- Tiny Tyrant-Manakin
- Tit Berrypecker
- Tit Hylia
- Titicaca Grebe
- Tit-like Dacnis
- Toco Toucan
- Tocuyo Sparrow
- Todd's Antwren
- Todd's Nightjar
- Todd's Sirystes
- Tody Motmot
- Togian Boobook
- Togian White-eye
- Togo Paradise Whydah
- Tolima Blossomcrown
- Tolima Dove
- Tomtit
- Tongan Ground Dove
- Tongan Megapode
- Tongan Whistler
- Tooth-billed Bowerbird
- Tooth-billed Hummingbird
- Tooth-billed Pigeon
- Tooth-billed Tanager
- Tooth-billed Wren
- Topknot Pigeon
- Toro Olive Greenbul
- Torotoroka Scops Owl
- Torrent Duck
- Torrent Flyrobin
- Torrent Tyrannulet
- Torrent-lark
- Torresian Crow
- Torresian Imperial Pigeon
- Torresian Kingfisher
- Toucan Barbet
- Tourmaline Sunangel
- Townsend's Shearwater
- Townsend's Solitaire
- Townsend's Storm Petrel
- Townsend's Warbler
- Tractrac Chat
- Transvolcanic Jay
- Tree Martin
- Tree Pipit
- Tree Swallow
- Tres Marias Amazon
- Tricolored Blackbird
- Tricolored Brushfinch
- Tricolored Grebe
- Tricolored Heron
- Tricolored Munia
- Tricolored Parrotfinch
- Trilling Cisticola
- Trilling Gnatwren
- Trilling Shrike-babbler
- Trilling Tailorbird
- Trilling Tapaculo
- Trindade Petrel
- Trinidad Euphonia
- Trinidad Motmot
- Trinidad Piping Guan
- Tristan Albatross
- Tristan Moorhen
- Tristan Thrush
- Tristram's Bunting
- Tristram's Starling
- Tristram's Storm Petrel
- Tristram's Warbler
- Trocaz Pigeon
- Tropeiro Seedeater
- Tropical Boubou
- Tropical Gnatcatcher
- Tropical Kingbird
- Tropical Mockingbird
- Tropical Parula
- Tropical Pewee
- Tropical Screech Owl
- Tropical Scrubwren
- Tropical Shearwater
- Trumpet Manucode
- Trumpeter Finch
- Trumpeter Hornbill
- Trumpeter Swan
- Tsavo Sunbird
- Tschudi's Nightjar
- Tschudi's Tapaculo
- Tschudi's Woodcreeper
- Tsingy Wood Rail
- Tuamotu Reed Warbler
- Tuamotu Sandpiper
- Tucuman Amazon
- Tucuman Mountain Finch
- Tufted Antshrike
- Tufted Coquette
- Tufted Duck
- Tufted Jay
- Tufted Puffin
- Tufted Titmouse
- Tufted Tit-Spinetail
- Tufted Tit-Tyrant
- Tui
- Tui Parakeet
- Tullberg's Woodpecker
- Tumbes Hummingbird
- Tumbes Pewee
- Tumbes Sparrow
- Tumbes Swallow
- Tumbes Tyrant
- Tumbesian Tyrannulet
- Tundra Bean Goose
- Tundra Swan
- Turati's Boubou
- Turkey Vulture
- Turner's Eremomela
- Turquoise Cotinga
- Turquoise Dacnis
- Turquoise Flycatcher
- Turquoise Jay
- Turquoise Parrot
- Turquoise Tanager
- Turquoise-browed Motmot
- Turquoise-fronted Amazon
- Turquoise-throated Barbet
- Turquoise-throated Puffleg
- Turquoise-winged Parrotlet
- Tuxtla Quail-Dove
- Twelve-wired Bird-of-paradise
- Twite
- Two-banded Plover
- Two-banded Puffbird
- Two-banded Warbler
- Two-barred Crossbill
- Two-barred Warbler
- Tylas Vanga
- Tyrannine Woodcreeper
- Tyrian Metaltail
- Tytler's Leaf Warbler
- Ua Pou Monarch
- Udzungwa Forest Partridge
- Uganda Woodland Warbler
- Ula-ai-hawane
- Ultramarine Flycatcher
- Ultramarine Grosbeak
- Ultramarine Kingfisher
- Ultramarine Lorikeet
- Uluguru Bushshrike
- Uluguru Greenbul
- Uluguru Violet-backed Sunbird
- Unadorned Flycatcher
- Undulated Antpitta
- Undulated Antshrike
- Undulated Tinamou
- Unicolored Antwren
- Unicolored Blackbird
- Unicolored Jay
- Unicolored Tapaculo
- Unicolored Thrush
- Uniform Antshrike
- Uniform Crake
- Uniform Finch
- Uniform Swiftlet
- Uniform Treehunter
- Uniform Woodcreeper
- Unspotted Saw-whet Owl
- Unstreaked Tit-Tyrant
- Upcher's Warbler
- Upland Antshrike
- Upland Buzzard
- Upland Goose
- Upland Pipit
- Upland Sandpiper
- Ural Owl
- Urich's Tyrannulet
- Urrao Antpitta
- Ursula's Sunbird
- Usambara Akalat
- Usambara Double-collared Sunbird
- Usambara Eagle-Owl
- Usambara Hyliota
- Usambara Thrush
- Usambara Weaver
- Ussher's Flycatcher
- Vampire Ground Finch
- Van Dam's Vanga
- Van Hasselt's Sunbird
- Vanikoro Flycatcher
- Vanikoro Monarch
- Vanikoro White-eye
- Vanuatu Imperial Pigeon
- Vanuatu Kingfisher
- Vanuatu Megapode
- Vanuatu Petrel
- Vanuatu White-eye
- Variable Antshrike
- Variable Goshawk
- Variable Hawk
- Variable Oriole
- Variable Oystercatcher
- Variable Seedeater
- Variable Shrikethrush
- Variable Sunbird
- Variable Wheatear
- Varied Bunting
- Varied Honeyeater
- Varied Lorikeet
- Varied Sittella
- Varied Solitaire
- Varied Thrush
- Varied Tit
- Varied Triller
- Variegated Antpitta
- Variegated Bristle Tyrant
- Variegated Fairywren
- Variegated Flycatcher
- Variegated Laughingthrush
- Variegated Tinamou
- Varzea Piculet
- Varzea Schiffornis
- Varzea Thrush
- Vaurie's Nightjar
- Vaux's Swift
- Veery
- Vega Gull
- Vegetarian Finch
- Velasquez's Woodpecker
- Vella Lavella White-eye
- Velvet Asity
- Velvet Flycatcher
- Velvet Scoter
- Velvet-browed Brilliant
- Velvet-fronted Euphonia
- Velvet-fronted Grackle
- Velvet-fronted Nuthatch
- Velvet-mantled Drongo
- Velvet-purple Coronet
- Velvety Black Tyrant
- Venezuelan Bristle Tyrant
- Venezuelan Flowerpiercer
- Venezuelan Flycatcher
- Venezuelan Parakeet
- Venezuelan Sylph
- Venezuelan Troupial
- Venezuelan Tyrannulet
- Venezuelan Wood Quail
- Veracruz Wren
- Veraguan Mango
- Verdin
- Verditer Flycatcher
- Vermiculated Fishing Owl
- Vermiculated Screech Owl
- Vermilion Cardinal
- Vermilion Flycatcher
- Vermilion Tanager
- Vernal Hanging Parrot
- Verreaux's Coua
- Verreaux's Eagle
- Verreaux's Eagle-Owl
- Verreaux's Monal-Partridge
- Versicolored Barbet
- Versicolored Emerald
- Versicolored Monarch
- Vervain Hummingbird
- Vesper Sparrow
- Victoria Crowned Pigeon
- Victoria's Riflebird
- Victorin's Warbler
- Vieillot's Barbet
- Vieillot's Black Weaver
- Vietnamese Crested Argus
- Vietnamese Cutia
- Vietnamese Greenfinch
- Vigors's Sunbird
- Vilcabamba Brushfinch
- Vilcabamba Tapaculo
- Vilcabamba Thistletail
- Village Indigobird
- Village Weaver
- Vinaceous Dove
- Vinaceous Rosefinch
- Vinaceous-breasted Amazon
- Vincent's Bunting
- Vinous-breasted Sparrowhawk
- Vinous-breasted Starling
- Vinous-throated Parrotbill
- Violaceous Coucal
- Violaceous Euphonia
- Violaceous Jay
- Violaceous Quail-Dove
- Violet Crow
- Violet Cuckoo
- Violet Sabrewing
- Violet Turaco
- Violet Wood Hoopoe
- Violet-backed Hyliota
- Violet-backed Starling
- Violet-bellied Hummingbird
- Violet-breasted Sunbird
- Violet-capped Hummingbird
- Violet-capped Woodnymph
- Violet-chested Hummingbird
- Violet-crowned Hummingbird
- Violet-eared Waxbill
- Violet-fronted Brilliant
- Violet-green Swallow
- Violet-headed Hummingbird
- Violet-hooded Starling
- Violet-necked Lory
- Violet-tailed Sunbird
- Violet-tailed Sylph
- Violet-throated Metaltail
- Violet-throated Starfrontlet
- Virginia Rail
- Virginia's Warbler
- Viridian Dacnis
- Viridian Metaltail
- Visayan Blue Fantail
- Visayan Broadbill
- Visayan Bulbul
- Visayan Fantail
- Visayan Hornbill
- Visayan Miniature Babbler
- Visayan Pygmy Babbler
- Vitelline Masked Weaver
- Vitelline Warbler
- Vivid Niltava
- Vogelkop Bowerbird
- Vogelkop Melidectes
- Vogelkop Owlet-nightjar
- Vogelkop Scrubwren
- Vogelkop Whistler
- Volcano Hummingbird
- Volcano Junco
- Volcano Swiftlet
- Von der Decken's Hornbill
- Von Schrenck's Bittern
- Vulturine Guineafowl
- Vulturine Parrot
- Wagler's Toucanet
- Wahlberg's Eagle
- Wahnes's Parotia
- Waigeo Brushturkey
- Waigeo Shrikethrush
- Wailing Cisticola
- Wakatobi White-eye
- Wake Island Rail
- Wakolo Myzomela
- Walden's Hornbill
- Wallacean Cuckooshrike
- Wallacean Drongo
- Wallacean Whistler
- Wallace's Fairywren
- Wallace's Fruit Dove
- Wallace's Hanging Parrot
- Wallace's Hawk-Eagle
- Wallace's Owlet-nightjar
- Wallace's Scops Owl
- Wallcreeper
- Waller's Starling
- Wandering Albatross
- Wandering Tattler
- Wandering Whistling Duck
- Warbling Doradito
- Warbling Vireo
- Warbling White-eye
- Ward's Flycatcher
- Ward's Trogon
- Warsangli Linnet
- Water Pipit
- Water Rail
- Water Thick-knee
- Watercock
- Watkins's Antpitta
- Wattled Broadbill
- Wattled Brushturkey
- Wattled Crane
- Wattled Curassow
- Wattled Guan
- Wattled Ibis
- Wattled Jacana
- Wattled Ploughbill
- Wattled Smoky Honeyeater
- Wattled Starling
- Waved Albatross
- Waved Woodpecker
- Wayanad Laughingthrush
- Wedge-billed Woodcreeper
- Wedge-rumped Storm Petrel
- Wedge-tailed Eagle
- Wedge-tailed Grass Finch
- Wedge-tailed Green Pigeon
- Wedge-tailed Hillstar
- Wedge-tailed Jery
- Wedge-tailed Sabrewing
- Wedge-tailed Shearwater
- Weebill
- Weka
- Welcome Swallow
- West African Crested Tern
- West African Seedeater
- West African Swallow
- West African Wattle-eye
- West Himalayan Bush Warbler
- West Indian Whistling Duck
- West Indian Woodpecker
- West Mexican Chachalaca
- West Peruvian Dove
- West Peruvian Screech Owl
- Western Alpine Mannikin
- Western Banded Snake Eagle
- Western Barn Owl
- Western Bearded Greenbul
- Western Black-eared Wheatear
- Western Black-headed Batis
- Western Bluebill
- Western Bluebird
- Western Bonelli's Warbler
- Western Bowerbird
- Western Bristlebird
- Western Bronze-naped Pigeon
- Western Capercaillie
- Western Cattle Egret
- Western Chat-Tanager
- Western Citril
- Western Corella
- Western Crowned Pigeon
- Western Crowned Warbler
- Western Emerald
- Western Fieldwren
- Western Fire-eye
- Western Gerygone
- Western Grasswren
- Western Grebe
- Western Greenbul
- Western Ground Parrot
- Western Gull
- Western Hemispingus
- Western Jackdaw
- Western Kingbird
- Western Marsh Harrier
- Western Meadowlark
- Western Miombo Sunbird
- Western Nicator
- Western Olivaceous Warbler
- Western Oriole
- Western Orphean Warbler
- Western Osprey
- Western Parotia
- Western Plantain-eater
- Western Quail-thrush
- Western Red-billed Hornbill
- Western Reef Heron
- Western Rock Nuthatch
- Western Rosella
- Western Sandpiper
- Western Screech Owl
- Western Spindalis
- Western Spinebill
- Western Square-tailed Drongo
- Western Striolated Puffbird
- Western Subalpine Warbler
- Western Swamphen
- Western Tanager
- Western Thornbill
- Western Tinkerbird
- Western Tragopan
- Western Violet-backed Sunbird
- Western Wattlebird
- Western Wattled Cuckooshrike
- Western Whistler
- Western Wood Pewee
- Western Woodhaunter
- Western Yellow Robin
- Western Yellow Wagtail
- Westland Petrel
- Wetar Figbird
- Wetar Ground Dove
- Weyns's Weaver
- Whinchat
- Whiskered Auklet
- Whiskered Flowerpecker
- Whiskered Myiobius
- Whiskered Pitta
- Whiskered Screech Owl
- Whiskered Tern
- Whiskered Treeswift
- Whiskered Wren
- Whiskered Yuhina
- Whistler's Warbler
- Whistling Cisticola
- Whistling Fruit Dove
- Whistling Green Pigeon
- Whistling Heron
- Whistling Kite
- Whistling Warbler
- White Bellbird
- White Cockatoo
- White Eared Pheasant
- White Hawk
- White Monjita
- White Stork
- White Swamphen
- White Tern
- White Wagtail
- White Woodpecker
- White-backed Black Tit
- White-backed Duck
- White-backed Mousebird
- White-backed Night Heron
- White-backed Stilt
- White-backed Swallow
- White-backed Vulture
- White-backed Woodpecker
- White-backed Woodswallow
- White-banded Mockingbird
- White-banded Swallow
- White-banded Tyrannulet
- White-barred Piculet
- White-bearded Antshrike
- White-bearded Flycatcher
- White-bearded Greenbul
- White-bearded Helmetcrest
- White-bearded Hermit
- White-bearded Manakin
- White-bellied Antbird
- White-bellied Antpitta
- White-bellied Blue Flycatcher
- White-bellied Blue Robin
- White-bellied Bush Chat
- White-bellied Bustard
- White-bellied Canary
- White-bellied Chachalaca
- White-bellied Cinclodes
- White-bellied Crested Flycatcher
- White-bellied Cuckooshrike
- White-bellied Dacnis
- White-bellied Drongo
- White-bellied Emerald
- White-bellied Erpornis
- White-bellied Fantail
- White-bellied Go-away-bird
- White-bellied Goshawk
- White-bellied Green Pigeon
- White-bellied Heron
- White-bellied Honeyeater
- White-bellied Hummingbird
- White-bellied Imperial Pigeon
- White-bellied Kingfisher
- White-bellied Minivet
- White-bellied Mountaingem
- White-bellied Munia
- White-bellied Nothura
- White-bellied Parrot
- White-bellied Piculet
- White-bellied Pitohui
- White-bellied Pygmy Tyrant
- White-bellied Redstart
- White-bellied Robin-Chat
- White-bellied Sea Eagle
- White-bellied Seedeater
- White-bellied Seedsnipe
- White-bellied Spinetail
- White-bellied Storm Petrel
- White-bellied Sunbird
- White-bellied Thicket Fantail
- White-bellied Tit
- White-bellied Tody-Tyrant
- White-bellied Treepie
- White-bellied Tyrannulet
- White-bellied Whipbird
- White-bellied Whistler
- White-bellied Woodpecker
- White-bellied Woodstar
- White-bellied Wren
- White-bibbed Antbird
- White-bibbed Babbler
- White-bibbed Fruit Dove
- White-bibbed Manakin
- White-bibbed Swallow
- White-billed Buffalo Weaver
- White-billed Crow
- White-billed Starling
- White-booted Racket-tail
- White-breasted Antbird
- White-breasted Babbler
- White-breasted Cormorant
- White-breasted Cuckooshrike
- White-breasted Ground Dove
- White-breasted Guineafowl
- White-breasted Hawk
- White-breasted Mesite
- White-breasted Nigrita
- White-breasted Nuthatch
- White-breasted Parakeet
- White-breasted Parrotbill
- White-breasted Robin
- White-breasted Tapaculo
- White-breasted Thrasher
- White-breasted Waterhen
- White-breasted Whistler
- White-breasted Wood Wren
- White-breasted Woodswallow
- White-bridled Finch
- White-browed Antbird
- White-browed Antpitta
- White-browed Babbler
- White-browed Blackbird
- White-browed Brushfinch
- White-browed Bulbul
- White-browed Bush Chat
- White-browed Bush Robin
- White-browed Chat-Tyrant
- White-browed Conebill
- White-browed Coucal
- White-browed Crake
- White-browed Crombec
- White-browed Fantail
- White-browed Foliage-gleaner
- White-browed Forest Flycatcher
- White-browed Fulvetta
- White-browed Ground Tyrant
- White-browed Guan
- White-browed Hawk
- White-browed Hemispingus
- White-browed Hermit
- White-browed Jungle Flycatcher
- White-browed Laughingthrush
- White-browed Nuthatch
- White-browed Owl
- White-browed Piculet
- White-browed Purpletuft
- White-browed Robin
- White-browed Robin-Chat
- White-browed Scimitar Babbler
- White-browed Scrub Robin
- White-browed Scrubwren
- White-browed Shama
- White-browed Shortwing
- White-browed Sparrow-Weaver
- White-browed Spinetail
- White-browed Tapaculo
- White-browed Tit
- White-browed Tit-Spinetail
- White-browed Tit-warbler
- White-browed Treecreeper
- White-browed Triller
- White-browed Wagtail
- White-browed Woodswallow
- White-capped Bunting
- White-capped Dipper
- White-capped Fruit Dove
- White-capped Monarch
- White-capped Munia
- White-capped Parrot
- White-capped Redstart
- White-capped Tanager
- White-cheeked Antbird
- White-cheeked Barbet
- White-cheeked Bullfinch
- White-cheeked Bushtit
- White-cheeked Cotinga
- White-cheeked Honeyeater
- White-cheeked Laughingthrush
- White-cheeked Nuthatch
- White-cheeked Partridge
- White-cheeked Pintail
- White-cheeked Starling
- White-cheeked Tern
- White-cheeked Tody-Flycatcher
- White-cheeked Turaco
- White-chested Alethe
- White-chested Babbler
- White-chested Emerald
- White-chested Puffbird
- White-chested Swift
- White-chested Tinkerbird
- White-chested White-eye
- White-chinned Jacamar
- White-chinned Myzomela
- White-chinned Petrel
- White-chinned Prinia
- White-chinned Sapphire
- White-chinned Swift
- White-chinned Thistletail
- White-chinned Thrush
- White-chinned Woodcreeper
- White-collared Blackbird
- White-collared Foliage-gleaner
- White-collared Jay
- White-collared Kite
- White-collared Manakin
- White-collared Monarch
- White-collared Oliveback
- White-collared Pigeon
- White-collared Starling
- White-collared Swift
- White-collared Yuhina
- White-crested Coquette
- White-crested Elaenia
- White-crested Guan
- White-crested Helmetshrike
- White-crested Hornbill
- White-crested Laughingthrush
- White-crested Spadebill
- White-crested Tiger Heron
- White-crested Turaco
- White-crested Tyrannulet
- White-crowned Cliff Chat
- White-crowned Cuckoo
- White-crowned Forktail
- White-crowned Hornbill
- White-crowned Lapwing
- White-crowned Manakin
- White-crowned Parrot
- White-crowned Penduline Tit
- White-crowned Pigeon
- White-crowned Robin-Chat
- White-crowned Shama
- White-crowned Sparrow
- White-crowned Starling
- White-crowned Wheatear
- White-eared Barbet
- White-eared Bronze Cuckoo
- White-eared Brown Dove
- White-eared Bulbul
- White-eared Catbird
- White-eared Conebill
- White-eared Ground Sparrow
- White-eared Honeyeater
- White-eared Hummingbird
- White-eared Jacamar
- White-eared Monarch
- White-eared Myza
- White-eared Night Heron
- White-eared Parakeet
- White-eared Puffbird
- White-eared Sibia
- White-eared Solitaire
- White-eared Tailorbird
- White-edged Oriole
- White-eyed Attila
- White-eyed Buzzard
- White-eyed Foliage-gleaner
- White-eyed Gull
- White-eyed Parakeet
- White-eyed River Martin
- White-eyed Robin
- White-eyed Slaty Flycatcher
- White-eyed Starling
- White-eyed Stipplethroat
- White-eyed Thrush
- White-eyed Tody-Tyrant
- White-eyed Vireo
- White-faced Cuckoo-Dove
- White-faced Heron
- White-faced Ibis
- White-faced Nunbird
- White-faced Plover
- White-faced Quail-Dove
- White-faced Robin
- White-faced Starling
- White-faced Storm Petrel
- White-faced Whistling Duck
- White-faced Whitestart
- White-flanked Antwren
- White-flanked Sunbird
- White-fronted Amazon
- White-fronted Bee-eater
- White-fronted Black Chat
- White-fronted Chat
- White-fronted Falconet
- White-fronted Ground Dove
- White-fronted Ground Tyrant
- White-fronted Honeyeater
- White-fronted Manakin
- White-fronted Nunbird
- White-fronted Plover
- White-fronted Quail-Dove
- White-fronted Scops Owl
- White-fronted Swift
- White-fronted Tern
- White-fronted Tit
- White-fronted Tyrannulet
- White-fronted Wattle-eye
- White-fronted Whitestart
- White-fronted Woodpecker
- White-gaped Honeyeater
- White-gorgeted Flycatcher
- Whitehead
- White-headed Babbler
- White-headed Barbet
- White-headed Brushfinch
- White-headed Buffalo Weaver
- White-headed Bulbul
- White-headed Duck
- White-headed Fruit Dove
- White-headed Marsh Tyrant
- White-headed Mousebird
- White-headed Munia
- White-headed Petrel
- White-headed Pigeon
- White-headed Robin-Chat
- White-headed Saw-wing
- White-headed Starling
- White-headed Vanga
- White-headed Vulture
- White-headed Wood Hoopoe
- White-headed Woodpecker
- White-headed Wren
- Whitehead's Broadbill
- Whitehead's Spiderhunter
- Whitehead's Swiftlet
- Whitehead's Trogon
- White-hooded Babbler
- White-lined Antbird
- White-lined Honeyeater
- White-lined Tanager
- White-lored Antpitta
- White-lored Euphonia
- White-lored Gnatcatcher
- White-lored Oriole
- White-lored Spinetail
- White-lored Tyrannulet
- White-lored Warbler
- White-mantled Barbet
- White-mantled Kingfisher
- White-masked Antbird
- White-naped Brushfinch
- White-naped Crane
- White-naped Honeyeater
- White-naped Jay
- White-naped Lory
- White-naped Monarch
- White-naped Pigeon
- White-naped Seedeater
- White-naped Swift
- White-naped Tit
- White-naped Woodpecker
- White-naped Xenopsaris
- White-naped Yuhina
- White-necked Babbler
- White-necked Coucal
- White-necked Crow
- White-necked Hawk
- White-necked Heron
- White-necked Jacobin
- White-necked Laughingthrush
- White-necked Myna
- White-necked Petrel
- White-necked Puffbird
- White-necked Raven
- White-necked Rockfowl
- White-necked Thrush
- White-necklaced Partridge
- White-plumed Antbird
- White-plumed Honeyeater
- White-quilled Rock Pigeon
- White-rimmed Brushfinch
- White-rimmed Warbler
- White-ringed Flycatcher
- White-ruffed Manakin
- White-rumped Babbler
- White-rumped Cuckooshrike
- White-rumped Falcon
- White-rumped Hawk
- White-rumped Monjita
- White-rumped Munia
- White-rumped Robin
- White-rumped Sandpiper
- White-rumped Seedeater
- White-rumped Shama
- White-rumped Sirystes
- White-rumped Snowfinch
- White-rumped Spinetail
- White-rumped Swallow
- White-rumped Swift
- White-rumped Swiftlet
- White-rumped Tanager
- White-rumped Triller
- White-rumped Vulture
- White's Thrush
- White-shouldered Antbird
- White-shouldered Antshrike
- White-shouldered Black Tit
- White-shouldered Fairywren
- White-shouldered Fire-eye
- White-shouldered Ibis
- White-shouldered Starling
- White-shouldered Tanager
- White-shouldered Triller
- White-sided Flowerpiercer
- White-sided Hillstar
- White-speckled Laughingthrush
- White-spectacled Bulbul
- White-spectacled Warbler
- White-spotted Fantail
- White-spotted Flufftail
- White-spotted Mannikin
- White-spotted Wattle-eye
- White-spotted Woodpecker
- White-starred Robin
- White-streaked Antvireo
- White-streaked Friarbird
- White-streaked Honeyeater
- White-striped Forest Rail
- White-striped Warbler
- White-striped Woodcreeper
- White-tailed Alethe
- White-tailed Ant Thrush
- White-tailed Blue Flycatcher
- White-tailed Cotinga
- White-tailed Crested Flycatcher
- White-tailed Eagle
- White-tailed Emerald
- White-tailed Flycatcher
- White-tailed Goldenthroat
- White-tailed Hawk
- White-tailed Hummingbird
- White-tailed Jay
- White-tailed Kite
- White-tailed Lapwing
- White-tailed Lark
- White-tailed Monarch
- White-tailed Nightjar
- White-tailed Nuthatch
- White-tailed Ptarmigan
- White-tailed Robin
- White-tailed Sabrewing
- White-tailed Shrike
- White-tailed Shrike-Tyrant
- White-tailed Starfrontlet
- White-tailed Stonechat
- White-tailed Swallow
- White-tailed Trogon
- White-tailed Tropicbird
- White-tailed Tyrannulet
- White-tailed Warbler
- White-thighed Hornbill
- White-thighed Swallow
- White-throated Antbird
- White-throated Antpitta
- White-throated Babbler
- White-throated Barbtail
- White-throated Bee-eater
- White-throated Bulbul
- White-throated Bush Chat
- White-throated Bushtit
- White-throated Cacholote
- White-throated Canary
- White-throated Caracara
- White-throated Crake
- White-throated Daggerbill
- White-throated Dipper
- White-throated Earthcreeper
- White-throated Fantail
- White-throated Flycatcher
- White-throated Francolin
- White-throated Gerygone
- White-throated Grasswren
- White-throated Greenbul
- White-throated Ground Dove
- White-throated Hawk
- White-throated Honeyeater
- White-throated Hummingbird
- White-throated Jacamar
- White-throated Jay
- White-throated Jungle Flycatcher
- White-throated Kingbird
- White-throated Kingfisher
- White-throated Laughingthrush
- White-throated Magpie-Jay
- White-throated Manakin
- White-throated Mountain Babbler
- White-throated Mountaingem
- White-throated Needletail
- White-throated Nightjar
- White-throated Oxylabes
- White-throated Pewee
- White-throated Quail-Dove
- White-throated Rail
- White-throated Redstart
- White-throated Robin
- White-throated Robin-Chat
- White-throated Rock Thrush
- White-throated Screech Owl
- White-throated Seedeater
- White-throated Shrike-Tanager
- White-throated Sierra Finch
- White-throated Spadebill
- White-throated Sparrow
- White-throated Swallow
- White-throated Swift
- White-throated Tapaculo
- White-throated Thrush
- White-throated Tinamou
- White-throated Toucan
- White-throated Toucanet
- White-throated Towhee
- White-throated Treecreeper
- White-throated Treerunner
- White-throated Tyrannulet
- White-throated Woodcreeper
- White-throated Woodpecker
- White-throated Wren-Babbler
- White-tipped Dove
- White-tipped Monarch
- White-tipped Plantcutter
- White-tipped Quetzal
- White-tipped Sicklebill
- White-tipped Swift
- White-tufted Grebe
- White-tufted Sunbeam
- White-vented Euphonia
- White-vented Plumeleteer
- White-vented Shama
- White-vented Violetear
- White-vented Whistler
- White-wedged Piculet
- White-whiskered Hermit
- White-whiskered Laughingthrush
- White-whiskered Puffbird
- White-whiskered Spinetail
- White-winged Apalis
- White-winged Becard
- White-winged Black Tit
- White-winged Black Tyrant
- White-winged Brushfinch
- White-winged Chough
- White-winged Cinclodes
- White-winged Cliff Chat
- White-winged Collared Dove
- White-winged Coot
- White-winged Cotinga
- White-winged Cuckooshrike
- White-winged Diuca Finch
- White-winged Dove
- White-winged Duck
- White-winged Fairywren
- White-winged Flufftail
- White-winged Grosbeak
- White-winged Guan
- White-winged Lark
- White-winged Magpie
- White-winged Nightjar
- White-winged Parakeet
- White-winged Potoo
- White-winged Robin
- White-winged Scoter
- White-winged Shrike-Tanager
- White-winged Snowfinch
- White-winged Swallow
- White-winged Swamp Warbler
- White-winged Tanager
- White-winged Tern
- White-winged Triller
- White-winged Warbler
- White-winged Widowbird
- White-winged Woodpecker
- Whooper Swan
- Whooping Crane
- Whooping Motmot
- Whyte's Barbet
- Whyte's Double-collared Sunbird
- Wied's Tyrant-Manakin
- Wild Turkey
- Wilkins's Finch
- Willard's Sooty Boubou
- Willcocks's Honeyguide
- Willet
- Williamson's Sapsucker
- Williams's Lark
- Willie Wagtail
- Willis's Antbird
- Willow Flycatcher
- Willow Ptarmigan
- Willow Tit
- Willow Warbler
- Wilson's Bird-of-paradise
- Wilson's Indigobird
- Wilson's Phalarope
- Wilson's Plover
- Wilson's Snipe
- Wilson's Storm Petrel
- Wilson's Warbler
- Winchell's Kingfisher
- Winding Cisticola
- Wine-throated Hummingbird
- Wing-banded Antbird
- Wing-banded Wren
- Wing-barred Piprites
- Wing-barred Seedeater
- Wing-snapping Cisticola
- Winifred's Warbler
- Winter Wren
- Wire-crested Thorntail
- Wire-tailed Manakin
- Wire-tailed Swallow
- Wompoo Fruit Dove
- Wonga Pigeon
- Wood Duck
- Wood Pipit
- Wood Sandpiper
- Wood Snipe
- Wood Stork
- Wood Thrush
- Wood Warbler
- Woodchat Shrike
- Woodford's Rail
- Woodhouse's Antpecker
- Woodhouse's Scrub Jay
- Woodland Kingfisher
- Woodlark
- Woodpecker Finch
- Woodward's Batis
- Woolly-necked Stork
- Worcester's Buttonquail
- Worm-eating Warbler
- Worthen's Sparrow
- Wreathed Hornbill
- Wren-like Rushbird
- Wrenthrush
- Wrentit
- Wrinkled Hornbill
- Writhed Hornbill
- Wrybill
- Xantus's Hummingbird
- Xavier's Greenbul
- Xingu Scale-backed Antbird
- Yap Cicadabird
- Yap Monarch
- Yapacana Antbird
- Yelkouan Shearwater
- Yellow Bishop
- Yellow Bittern
- Yellow Bunting
- Yellow Canary
- Yellow Cardinal
- Yellow Chat
- Yellow Grosbeak
- Yellow Honeyeater
- Yellow Longbill
- Yellow Oriole
- Yellow Penduline Tit
- Yellow Rail
- Yellow Thornbill
- Yellow Tit
- Yellow Tyrannulet
- Yellow Wattlebird
- Yellow-backed Oriole
- Yellow-backed Tanager
- Yellow-bearded Greenbul
- Yellow-bellied Bulbul
- Yellow-bellied Bush Warbler
- Yellow-bellied Chat-Tyrant
- Yellow-bellied Dacnis
- Yellow-bellied Elaenia
- Yellow-bellied Eremomela
- Yellow-bellied Fantail
- Yellow-bellied Flowerpecker
- Yellow-bellied Flycatcher
- Yellow-bellied Flyrobin
- Yellow-bellied Gerygone
- Yellow-bellied Greenbul
- Yellow-bellied Hyliota
- Yellow-bellied Longbill
- Yellow-bellied Prinia
- Yellow-bellied Sapsucker
- Yellow-bellied Seedeater
- Yellow-bellied Siskin
- Yellow-bellied Sunbird-Asity
- Yellow-bellied Tanager
- Yellow-bellied Tit
- Yellow-bellied Tyrannulet
- Yellow-bellied Warbler
- Yellow-bellied Wattle-eye
- Yellow-bellied Waxbill
- Yellow-bellied Whistler
- Yellow-bibbed Fruit Dove
- Yellow-bibbed Lory
- Yellow-billed Amazon
- Yellow-billed Babbler
- Yellow-billed Barbet
- Yellow-billed Blue Magpie
- Yellow-billed Cacique
- Yellow-billed Cardinal
- Yellow-billed Cotinga
- Yellow-billed Cuckoo
- Yellow-billed Duck
- Yellow-billed Honeyeater
- Yellow-billed Jacamar
- Yellow-billed Kingfisher
- Yellow-billed Kite
- Yellow-billed Loon
- Yellow-billed Lorikeet
- Yellow-billed Magpie
- Yellow-billed Malkoha
- Yellow-billed Nunbird
- Yellow-billed Nuthatch
- Yellow-billed Oxpecker
- Yellow-billed Pintail
- Yellow-billed Shrike
- Yellow-billed Spoonbill
- Yellow-billed Stork
- Yellow-billed Teal
- Yellow-billed Tern
- Yellow-billed Tit-Tyrant
- Yellow-billed Turaco
- Yellow-breasted Antpitta
- Yellow-breasted Antwren
- Yellow-breasted Apalis
- Yellow-breasted Barbet
- Yellow-breasted Boatbill
- Yellow-breasted Boubou
- Yellow-breasted Bowerbird
- Yellow-breasted Brushfinch
- Yellow-breasted Bunting
- Yellow-breasted Chat
- Yellow-breasted Crake
- Yellow-breasted Flowerpecker
- Yellow-breasted Fruit Dove
- Yellow-breasted Greenfinch
- Yellow-breasted Pipit
- Yellow-breasted Racket-tail
- Yellow-breasted Satinbird
- Yellow-breasted Tailorbird
- Yellow-breasted Warbler
- Yellow-breasted Warbling Antbird
- Yellow-bridled Finch
- Yellow-browed Antbird
- Yellow-browed Bulbul
- Yellow-browed Bunting
- Yellow-browed Camaroptera
- Yellow-browed Melidectes
- Yellow-browed Seedeater
- Yellow-browed Shrike-Vireo
- Yellow-browed Sparrow
- Yellow-browed Tit
- Yellow-browed Tody-Flycatcher
- Yellow-browed Toucanet
- Yellow-browed Tyrant
- Yellow-browed Warbler
- Yellow-browed Woodpecker
- Yellow-capped Pygmy Parrot
- Yellow-capped Weaver
- Yellow-casqued Hornbill
- Yellow-cheeked Becard
- Yellow-cheeked Tit
- Yellow-chevroned Parakeet
- Yellow-chinned Spinetail
- Yellow-collared Chlorophonia
- Yellow-collared Lovebird
- Yellow-crested Cockatoo
- Yellow-crested Helmetshrike
- Yellow-crested Manakin
- Yellow-crested Tanager
- Yellow-crested Woodpecker
- Yellow-crowned Amazon
- Yellow-crowned Barbet
- Yellow-crowned Bishop
- Yellow-crowned Canary
- Yellow-crowned Elaenia
- Yellow-crowned Euphonia
- Yellow-crowned Gonolek
- Yellow-crowned Night Heron
- Yellow-crowned Parakeet
- Yellow-crowned Tyrannulet
- Yellow-crowned Whitestart
- Yellow-crowned Woodpecker
- Yellow-eared Barbet
- Yellow-eared Bulbul
- Yellow-eared Parrot
- Yellow-eared Spiderhunter
- Yellow-eared Toucanet
- Yellow-eared Woodpecker
- Yellow-eyed Babbler
- Yellow-eyed Black Flycatcher
- Yellow-eyed Bristlebill
- Yellow-eyed Junco
- Yellow-eyed Penguin
- Yellow-eyed Pigeon
- Yellow-eyed Starling
- Yellow-faced Flameback
- Yellow-faced Grassquit
- Yellow-faced Honeyeater
- Yellow-faced Myna
- Yellow-faced Parrot
- Yellow-faced Parrotlet
- Yellow-faced Siskin
- Yellow-footed Flycatcher
- Yellow-footed Green Pigeon
- Yellow-footed Gull
- Yellow-footed Honeyguide
- Yellow-fronted Barbet
- Yellow-fronted Canary
- Yellow-fronted Parrot
- Yellow-fronted Tinkerbird
- Yellow-fronted Woodpecker
- Yellow-gaped Honeyeater
- Yellow-green Brushfinch
- Yellow-green Grosbeak
- Yellow-green Tanager
- Yellow-green Vireo
- Yellowhammer
- Yellowhead
- Yellow-headed Amazon
- Yellow-headed Blackbird
- Yellow-headed Brushfinch
- Yellow-headed Caracara
- Yellow-headed Manakin
- Yellow-headed Warbler
- Yellow-hooded Blackbird
- Yellowish Bulbul
- Yellowish Flycatcher
- Yellowish Imperial Pigeon
- Yellowish Pipit
- Yellowish White-eye
- Yellowish-streaked Honeyeater
- Yellowish-streaked Lory
- Yellow-knobbed Curassow
- Yellow-legged Buttonquail
- Yellow-legged Flyrobin
- Yellow-legged Gull
- Yellow-legged Pigeon
- Yellow-legged Thrush
- Yellow-legged Tinamou
- Yellow-legged Weaver
- Yellow-lored Bristlebill
- Yellow-lored Tody-Flycatcher
- Yellow-mantled Weaver
- Yellow-mantled Widowbird
- Yellow-margined Flatbill
- Yellow-naped Amazon
- Yellow-necked Spurfowl
- Yellow-olive Flatbill
- Yellow-plumed Honeyeater
- Yellow-ringed White-eye
- Yellow-rumped Antwren
- Yellow-rumped Cacique
- Yellow-rumped Flowerpecker
- Yellow-rumped Flycatcher
- Yellow-rumped Honeyguide
- Yellow-rumped Mannikin
- Yellow-rumped Marshbird
- Yellow-rumped Seedeater
- Yellow-rumped Siskin
- Yellow-rumped Thornbill
- Yellow-rumped Tinkerbird
- Yellow-scarfed Tanager
- Yellow-shouldered Amazon
- Yellow-shouldered Blackbird
- Yellow-shouldered Grassquit
- Yellow-shouldered Grosbeak
- Yellow-sided Flowerpecker
- Yellow-spotted Barbet
- Yellow-spotted Bush Sparrow
- Yellow-spotted Honeyeater
- Yellow-streaked Greenbul
- Yellow-streaked Warbler
- Yellow-striped Brushfinch
- Yellow-tailed Black Cockatoo
- Yellow-tailed Oriole
- Yellow-thighed Brushfinch
- Yellow-throated Antwren
- Yellow-throated Apalis
- Yellow-throated Bulbul
- Yellow-throated Bunting
- Yellow-throated Bush Sparrow
- Yellow-throated Bush Tanager
- Yellow-throated Cuckoo
- Yellow-throated Euphonia
- Yellow-throated Flycatcher
- Yellow-throated Fulvetta
- Yellow-throated Greenbul
- Yellow-throated Hanging Parrot
- Yellow-throated Honeyeater
- Yellow-throated Laughingthrush
- Yellow-throated Leafbird
- Yellow-throated Leaflove
- Yellow-throated Longclaw
- Yellow-throated Miner
- Yellow-throated Nicator
- Yellow-throated Sandgrouse
- Yellow-throated Scrubwren
- Yellow-throated Seedeater
- Yellow-throated Spadebill
- Yellow-throated Sparrow
- Yellow-throated Tanager
- Yellow-throated Tinkerbird
- Yellow-throated Toucan
- Yellow-throated Vireo
- Yellow-throated Warbler
- Yellow-throated Whistler
- Yellow-throated White-eye
- Yellow-throated Woodland Warbler
- Yellow-throated Woodpecker
- Yellow-tinted Honeyeater
- Yellow-tufted Dacnis
- Yellow-tufted Honeyeater
- Yellow-tufted Woodpecker
- Yellow-vented Bulbul
- Yellow-vented Eremomela
- Yellow-vented Flowerpecker
- Yellow-vented Green Pigeon
- Yellow-vented Warbler
- Yellow-vented Woodpecker
- Yellow-wattled Bulbul
- Yellow-wattled Lapwing
- Yellow-whiskered Bush Tanager
- Yellow-whiskered Greenbul
- Yellow-winged Blackbird
- Yellow-winged Pytilia
- Yellow-winged Tanager
- Yellow-winged Vireo
- Yemen Linnet
- Yemen Serin
- Yemen Thrush
- Yemen Warbler
- Yucatan Amazon
- Yucatan Bobwhite
- Yucatan Flycatcher
- Yucatan Gnatcatcher
- Yucatan Jay
- Yucatan Nightjar
- Yucatan Poorwill
- Yucatan Vireo
- Yucatan Woodpecker
- Yucatan Wren
- Yungas Antwren
- Yungas Dove
- Yungas Manakin
- Yungas Pygmy Owl
- Yungas Screech Owl
- Yungas Tody-Tyrant
- Yungas Tyrannulet
- Yungas Warbler
- Yunnan Fulvetta
- Yunnan Nuthatch
- Zambezi Indigobird
- Zamboanga Bulbul
- Zanzibar Red Bishop
- Zapata Rail
- Zapata Sparrow
- Zapata Wren
- Zappey's Flycatcher
- Zarudny's Sparrow
- Zebra Dove
- Zebra Finch
- Zeledon's Antbird
- Zenaida Dove
- Zenker's Honeyguide
- Zigzag Heron
- Zimmer's Flatbill
- Zimmer's Tapaculo
- Zimmer's Tody-Tyrant
- Zimmer's Woodcreeper
- Zino's Petrel
- Zitting Cisticola
- Zoe's Imperial Pigeon
- Zone-tailed Hawk
