The Birds Portal
Birds are a group of warm-blooded vertebrates constituting the class Aves (/ˈeɪviːz/), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Birds live worldwide and range in size from the 5.5 cm (2.2 in) bee hummingbird to the 2.8 m (9 ft 2 in) common ostrich. There are over 11,000 living species, more than half of which are passerine, or "perching" birds. Birds have wings whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds. Wings, which are modified forelimbs, gave birds the ability to fly, although further evolution has led to the loss of flight in some birds, including ratites, penguins, and diverse endemic island species. The digestive and respiratory systems of birds are also uniquely adapted for flight. Some bird species of aquatic environments, particularly seabirds and some waterbirds, have further evolved for swimming. The study of birds is called ornithology.
Birds are feathered theropod dinosaurs and constitute the only known living dinosaurs. Likewise, birds are considered reptiles in the modern cladistic sense of the term, and their closest living relatives are the crocodilians. Birds are descendants of the primitive avialans (whose members include Archaeopteryx) which first appeared during the Late Jurassic. According to recent estimates, modern birds (Neornithes) evolved in the Late Cretaceous and diversified dramatically around the time of the Cretaceous–Paleogene extinction event 66 million years ago, which killed off the pterosaurs and all non-avian dinosaurs.
Many social species pass on knowledge across generations, which is considered a form of culture. Birds are social, communicating with visual signals, calls, and songs, and participating in such behaviours as cooperative breeding and hunting, flocking, and mobbing of predators. The vast majority of bird species are socially (but not necessarily sexually) monogamous, usually for one breeding season at a time, sometimes for years, and rarely for life. Other species have breeding systems that are polygynous (one male with many females) or, rarely, polyandrous (one female with many males). Birds produce offspring by laying eggs which are fertilised through sexual reproduction. They are usually laid in a nest and incubated by the parents. Most birds have an extended period of parental care after hatching.
Many species of birds are economically important as food for human consumption and raw material in manufacturing, with domesticated and undomesticated birds being important sources of eggs, meat, and feathers. Songbirds, parrots, and other species are popular as pets. Guano (bird excrement) is harvested for use as a fertiliser. Birds figure throughout human culture. About 120 to 130 species have become extinct due to human activity since the 17th century, and hundreds more before then. Human activity threatens about 1,200 bird species with extinction, though efforts are underway to protect them. Recreational birdwatching is an important part of the ecotourism industry. (Full article...)
Featured articles
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The St. Croix macaw (Ara autocthones) or Puerto Rican macaw is an extinct species of macaw whose remains have been found on the Caribbean islands of St. Croix and Puerto Rico. It was described in 1937 based on a tibiotarsus leg bone unearthed from a kitchen midden at a pre-Columbian site on St. Croix. A second specimen consisting of various bones from a similar site on Puerto Rico was described in 2008, while a coracoid from Montserrat may belong to this or another extinct species of macaw. The St. Croix macaw is one of 13 extinct macaw species that have been proposed to have lived on the Caribbean islands. Macaws were frequently transported long distances by humans in prehistoric and historical times, so it is impossible to know whether species known only from bones or accounts were native or imported.
As it is only known from bones, the St. Croix macaw's color is not known. Extant macaws can generally be grouped in either large-body or small-body size clusters. Yet, the bones of the St. Croix macaw are intermediate in size between the two, and it was slightly larger than the extinct Cuban macaw (Ara tricolor). Only the blue-throated macaw (Ara glaucogularis) and Lear's macaw (Anodorhynchus leari) are similar in size. It differed from other macaws in various skeletal details and shared several features with only the genus Ara. Like other macaw species in the Caribbean, the St. Croix macaw is believed to have been driven to extinction by humans, as indicated by the fact that its remains were found in kitchen middens. (Full article...) -
The Eurasian treecreeper or common treecreeper (Certhia familiaris) is a small passerine bird also known in the British Isles, where it is the only living member of its genus, simply as treecreeper. It is similar to other treecreepers, and has a curved bill, patterned brown upperparts, whitish underparts, and long stiff tail feathers which help it creep up tree trunks. It can be most easily distinguished from the similar short-toed treecreeper, which shares much of its European range, by its different song.
The Eurasian treecreeper has nine or more subspecies which breed in different parts of its range in the Palearctic. This species is found in woodlands of all kinds, but where it overlaps with the short-toed treecreeper in western Europe it is more likely to be found in coniferous forests or at higher altitudes. It nests in tree crevices or behind bark flakes, and favours introduced giant sequoia as nest sites where they are available. The female typically lays five or six pink-speckled white eggs in the lined nest, but eggs and chicks are vulnerable to attack by woodpeckers and mammals, including squirrels.
The Eurasian treecreeper is insectivorous and climbs up tree trunks like a mouse, to search for insects which it picks from crevices in the bark with its fine curved bill. It then flies to the base of another tree with a distinctive erratic flight. This bird is solitary in winter, but may form communal roosts in cold weather. (Full article...) -
The Mauritius sheldgoose (Alopochen mauritiana), also known as the Mauritius shelduck, is an extinct species of sheldgoose that was endemic to the island of Mauritius. While geese were mentioned by visitors to Mauritius in the 17th century, few details were provided by these accounts. In 1893, a carpometacarpus wing-bone and a pelvis from the Mare aux Songes swamp were used to name a new species of comb duck, Sarcidiornis mauritianus. These bones were connected to the contemporary accounts of geese and later determined to belong to a species related to the Egyptian goose and placed in the sheldgoose genus Alopochen. The Mauritius and Réunion sheldgoose may have descended from Egyptian geese that colonised the Mascarene islands.
One contemporary account states that the Mauritius sheldgoose had wings that were half black and half white, and that the bird was not very large. The species may also be depicted in one illustration. Fossil elements show that it was smaller than the Egyptian goose, but with more robust legs. Little is known about the habits of the Mauritius sheldgoose, accounts indicate they were very tame, were grazers, lived in groups, and usually stayed on the north side of the island except for during the dry season when they were forced to the other side to drink. Their robust legs indicate they were becoming more terrestrial, which is supported by accounts stating they avoided water. The species was considered highly palatable by travellers, and while abundant in 1681, it declined quickly thereafter, being declared extinct in 1698. It was probably driven to extinction due to overhunting and predation by introduced animals, particularly cats. (Full article...) -
The turquoise parrot (Neophema pulchella) is a species of parrot in the genus Neophema native to Eastern Australia, from southeastern Queensland, through New South Wales and into North-Eastern Victoria. It was described by George Shaw in 1792. A small lightly built parrot at around 20 cm (7.9 in) long and 40 g (1+1⁄2 oz) in weight, it exhibits sexual dimorphism. The male is predominantly green with more yellowish underparts and a bright turquoise blue face. Its wings are predominantly blue with red shoulders. The female is generally duller and paler, with a pale green breast and yellow belly, and lacks the red wing patch.
Found in grasslands and open woodlands dominated by Eucalyptus and Callitris trees, the turquoise parrot feeds mainly on grasses and seeds and occasionally flowers, fruit and scale insects. It nests in hollows of gum trees. Much of its habitat has been altered and potential nesting sites lost. Predominantly sedentary, the turquoise parrot can be locally nomadic. Populations appear to be recovering from a crash in the early 20th century. The turquoise parrot has been kept in captivity since the 19th century, and several colour variants exist. (Full article...) -
The Perijá tapaculo (Scytalopus perijanus) is a species of passerine bird in the family Rhinocryptidae (tapaculos). Endemic to the Serranía del Perijá mountain range on the Colombia–Venezuela border, the Perijá tapaculo is found at altitudes of 1,600–3,225 metres (5,200–10,600 feet). Its body is 10 to 12 centimetres (3.9 to 4.7 inches) long and its tail is about 4 cm (1.6 in) long. Specimens have long been stored in museums, but the species was described only in 2015 based on sixteen specimens found between July 2008 and February 2009. It is considered vulnerable to extinction.
Adults have neutral grey heads, brown necks, brown-sepia striped backs, and grey-white bellies, breasts, and throats. Males have some buff markings on their breasts, and less sharp brown spots on their napes than females. The Perijá tapaculo is a secretive bird and therefore difficult to observe; as a result its ecology is poorly known. It feeds on insects and reproduces between April and July. Its range is partially within Chamicero de Perijá Bird Reserve in Colombia and the Sierra de Perijá National Park in Venezuela. (Full article...) -
The white-necked rockfowl (Picathartes gymnocephalus) is a medium-sized bird in the family Picathartidae, with a long neck and tail. Also known as the white-necked picathartes, this passerine is mainly found in rocky forested areas at higher altitudes in West Africa from Guinea to Ghana. Its distribution is patchy, with populations often being isolated from each other. The rockfowl typically chooses to live near streams and inselbergs. It has no recognized subspecies, though some believe that it forms a superspecies with the grey-necked rockfowl. The white-necked rockfowl has greyish-black upperparts and white underparts. Its unusually long, dark brown tail is used for balance, and its thighs are muscular. The head is nearly featherless, with the exposed skin being bright yellow except for two large, circular black patches located just behind the eyes. Though the bird is usually silent, some calls are known.
These rockfowl feed primarily on insects, though parents feed small frogs to their young. One feeding strategy involves following Dorylus army ant swarms, feeding on insects flushed by the ants. Rockfowl move through the forest primarily through a series of hops and bounds or short flights in low vegetation. This species rarely flies for long distances. The white-necked rockfowl is monogamous and pairs nest either alone or in the vicinity of other pairs, sometimes in colonies with as many as eight nests. These nests are constructed out of mud formed into a deep cup and are built on rock surfaces, typically in caves. Two eggs are laid twice a year. Though the birds breed in colonies, infanticide is fairly common in this species, with rockfowl attempting to kill the young of other pairs. Nestlings mature in about a month. This bird is long-lived.
This species is classified as Vulnerable as its dwindling and fragmented populations are threatened by habitat destruction. Conservation efforts are underway in parts of its range in the form of habitat protection, education efforts, and new laws. Some of the indigenous peoples of Sierra Leone considered the species to be a protector of the home of their ancestral spirits. This rockfowl is considered one of Africa's most desirable birds by birders and is a symbol of ecotourism across its range. (Full article...) -
Carnaby's black cockatoo (Zanda latirostris), also known as the short-billed black cockatoo, is a large black cockatoo endemic to southwest Australia. It was described in 1948 by naturalist Ivan Carnaby. Measuring 53–58 cm (21–23 in) in length, it has a short crest on the top of its head. Its plumage is mostly greyish black, and it has prominent white cheek patches and a white tail band. The body feathers are edged with white giving a scalloped appearance. Adult males have a dark grey beak and pink eye-rings. Adult females have a bone-coloured beak, grey eye-rings and ear patches that are paler than those of the males.
This cockatoo usually lays a clutch of one to two eggs. It generally takes 28 to 29 days for the female to incubate the eggs, and the young fledge ten to eleven weeks after hatching. The young will stay with the family until the next breeding season, and sometimes even longer. The family leaves the nesting site after the young fledge until the following year. Carnaby's black cockatoo forms flocks when not breeding, with birds in drier habitats usually being more migratory than those in wetter ones. It flies with deep and slow wingbeats, generally high above trees. Seeds of plants of the families Proteaceae and, to a lesser extent, Myrtaceae form a large part of its diet.
Carnaby's black cockatoo nests in hollows situated high in trees with fairly large diameters, generally Eucalyptus. With much of its habitat lost to land clearing and development and threatened by further habitat destruction, Carnaby's black cockatoo is listed as an endangered species by the Federal and Western Australian governments. It is also classified as endangered by the International Union for Conservation of Nature (IUCN). Like most parrots, it is protected by CITES, an international agreement that makes trade, export, and import of listed wild-caught species illegal. (Full article...) -
The white-bellied sea eagle (Icthyophaga leucogaster), also known as the white-breasted sea eagle, is a large diurnal bird of prey in the family Accipitridae. Originally described by Johann Friedrich Gmelin in 1788, it is closely related to Sanford's sea eagle of the Solomon Islands, and the two are considered a superspecies. A distinctive bird, the adult white-bellied sea eagle has a white head, breast, under-wing coverts and tail. The upper parts are grey and the black under-wing flight feathers contrast with the white coverts. The tail is short and wedge-shaped as in all Haliaeetinae species. Like many raptors, the female is larger than the male, and can measure up to 90 cm (35 in) long with a wingspan of up to 2.2 m (7.2 ft), and weigh 4.5 kg (9.9 lb). Immature birds have brown plumage, which is gradually replaced by white until the age of five or six years. The call is a loud goose-like honking.
Resident from India and Sri Lanka through Southeast Asia to Australia on coasts and major waterways, the white-bellied sea eagle breeds and hunts near water, and fish form around half of its diet. Opportunistic, it consumes carrion and a wide variety of animals. Although rated as Least Concern globally, it has declined in parts of southeast Asia such as Thailand, and southeastern Australia. It is ranked as Threatened in Victoria and Vulnerable in South Australia and Tasmania. Human disturbance to its habitat is the main threat, both from direct human activity near nests which impacts on breeding success, and from removal of suitable trees for nesting. The white-bellied sea eagle is revered by indigenous people in many parts of Australia, and is the subject of various folk tales throughout its range. (Full article...) -
Abberton Reservoir is a pumped storage freshwater reservoir in eastern England near the Essex coast, with an area of 700 hectares (1,700 acres). Most of its water is pumped from the River Stour. It is the largest body of freshwater in Essex.
Constructed between 1935 and 1939, Abberton Reservoir is owned and managed by Essex and Suffolk Water, part of Northumbrian Water Group, and lies 6 km (3.7 mi) south-west of Colchester near the village of Layer de la Haye. In World War II, the reservoir was mined to deter invading seaplanes, and it was used by the RAF's No. 617 Squadron ("The Dam Busters") for practice runs for the bombing of the German dams in the Ruhr. A project to increase the capacity of Abberton Reservoir to 41,000 megalitres (9.0×109 imp gal) by raising its bank height was completed in 2013, along with a new link to transfer water from Norfolk's River Ouse to the Stour.
The reservoir is important for its breeding cormorants, wintering and moulting waterfowl, and migrating birds. It is an internationally important wetland, designated as a Ramsar site, Site of Special Scientific Interest and Special Protection Area, and is listed in A Nature Conservation Review. A small part of the site is managed by the Essex Wildlife Trust. (Full article...) -
Francis Willughby (sometimes spelt Willoughby, Latin: Franciscus Willughbeius) FRS (22 November 1635 – 3 July 1672) was an English Ornithologist, ichthyologist, mathematician and an early student of linguistics and games.
He was born and raised at Middleton Hall, Warwickshire, the only son of an affluent country family. He was a student at Trinity College, Cambridge, where he was tutored by the mathematician and naturalist John Ray, who became a lifetime friend and colleague, and lived with Willughby after 1662 when Ray lost his livelihood through his refusal to sign the Act of Uniformity. Willughby was elected as a Fellow of the Royal Society in 1661, then aged 27.
Willughby, Ray, and others such as John Wilkins were advocates of a new way of studying science, relying on observation and classification, rather than the received authority of Aristotle and the Bible. To this end, Willughby, Ray and their friends undertook a number of journeys to gather information and specimens, initially in England and Wales, but culminating in an extensive tour of continental Europe, visiting museums, libraries and private collections as well as studying local animals and plants. After their continental tour, he and Ray lived and worked mainly at Middleton Hall. Willughby married Emma Barnard in 1668 and the couple had three children. (Full article...) -
The long-tailed ground roller (Uratelornis chimaera) is a species of bird in the ground roller family Brachypteraciidae, placed in the monotypic genus Uratelornis. Endemic to arid spiny forests near the coast in southwestern Madagascar, this ground roller occurs at extremely low population densities throughout its habitat. This species requires shade and a deep layer of leaves on the ground, and it is absent from parts of the spiny forest lacking these features. It has no recognized subspecies, and its closest relative is the scaly ground roller. The long-tailed ground roller is the only ground roller to definitively display sexual dimorphism (differences in plumage or size between sexes). It is a medium-sized bird with a plump silhouette and a long tail. The upperparts are dark brown with black streaks while the underparts are light gray. The white throat is framed by black malar stripes and a black breastband, and a white stripe is present at the base of the bill. Sky-blue feathers are visible at the edge of the wings and the tail. Calls are rarely made outside the breeding season, though multiple courtship calls are made.
These ground rollers feed primarily on invertebrates, including ants, beetles, butterflies, and worms, which they find by searching through deep leaf litter or by remaining still and watching attentively. The ground roller primarily runs through its habitat on its strong legs, as its wings are relatively weak. It is a monogamous species, and it defends a territory during the breeding season of October to February. It digs a tunnel in the sand, at the end of which is a wider chamber where it makes its nest out of leaves and earthy pellets. Two to four eggs are laid. After the chicks fledge, the birds continue living in family groups until at least February before dispersing more widely across the scrubland.
This bird is classified as vulnerable by the IUCN and is threatened by habitat destruction. Since the arid, spiny forests in which it lives are not protected by the Malagasy government, it is losing habitat to slash-and-burn agriculture, charcoal collection, and logging. It is also hunted by the native peoples of Madagascar. (Full article...) -
The greater crested tern (Thalasseus bergii), also called crested tern or swift tern, is a tern in the family Laridae that nests in dense colonies on coastlines and islands in the tropical and subtropical Old World. Its five subspecies breed in the area from South Africa around the Indian Ocean to the central Pacific and Australia, all populations dispersing widely from the breeding range after nesting. This large tern is closely related to the royal and lesser crested terns, but can be distinguished by its size and bill colour.
The greater crested tern has grey upperparts, white underparts, a yellow bill, and a shaggy black crest that recedes in winter. Its young have a distinctive appearance, with strongly patterned grey, brown and white plumage, and rely on their parents for food for several months after they have fledged. Like all members of the genus Thalasseus, the greater crested tern feeds by plunge diving for fish, usually in marine environments; the male offers fish to the female as part of the courtship ritual.
This is an adaptable species that has learned to follow fishing boats for jettisoned bycatch, and to use unusual nest sites such as the roofs of buildings and artificial islands in salt pans and sewage works. Its eggs and young are taken by gulls and ibises, and human activities such as fishing, shooting and egg harvesting have caused local population declines. There are no global conservation concerns for this bird, which has a stable total population of more than 500,000 individuals. (Full article...) -
The masked shrike (Lanius nubicus) is a species of bird in the shrike family, Laniidae. It breeds in southeastern Europe and at the eastern end of the Mediterranean, with a separate population in eastern Iraq and western Iran. It is migratory, wintering mainly in northeast Africa. Although it is a short-range migrant, vagrants have occurred widely elsewhere, including northern and western Europe. It is the smallest member of its genus, long-tailed and with a hooked bill. The male has mainly black upperparts, with white on its crown, forehead and supercilium and large white patches on the shoulders and wings. The throat, neck sides and underparts are white, with orange flanks and breast. The female is a duller version of the male, with brownish black upperparts and a grey or buff tone to the shoulders and underparts. The juvenile has grey-brown upperparts with a paler forehead and barring from the head to rump, barred off-white underparts and brown wings аpart from the white primary patches. The species' calls are short and grating, but the song has melodic warbler-like components.
The masked shrike's preferred habitat is open woodland with bushes and some large trees. It is less conspicuous than its relatives, avoiding very open country and often perching in less exposed locations. The nest is a neat cup built in a tree by both adults, and the clutch is normally 4–6 eggs, which are incubated by the female for 14–16 days until hatching. The chicks are fed by both parents until they fledge 18–20 days later, and remain dependent on the adults for about 3–4 weeks after leaving the nest. The masked shrike eats mainly large insects, occasionally small vertebrates; it sometimes impales its prey on thorns or barbed wire. Populations are decreasing in parts of the European range, but not rapidly enough to raise serious conservation concerns, and the species is therefore classified by the International Union for Conservation of Nature as being of least concern. (Full article...) -
The song thrush (Turdus philomelos) is a thrush that breeds across the West Palearctic. It has brown upper-parts and black-spotted cream or buff underparts and has three recognised subspecies. Its distinctive song, which has repeated musical phrases, has frequently been referred to in poetry.
The song thrush breeds in forests, gardens and parks, and is partially migratory with many birds wintering in southern Europe, North Africa and the Middle East; it has also been introduced into New Zealand and Australia. Although it is not threatened globally, there have been serious population declines in parts of Europe, possibly due to changes in farming practices.
The song thrush builds a neat mud-lined cup nest in a bush or tree and lays four to five dark-spotted blue eggs. It is omnivorous and has the habit of using a favourite stone as an "anvil" on which to break open the shells of snails. Like other perching birds (passerines), it is affected by external and internal parasites and is vulnerable to predation by cats and birds of prey. (Full article...) -
The western yellow robin (Eopsaltria griseogularis) is a species of bird in the Australasian robin family, Petroicidae, native to Australia. Described by John Gould in 1838, the western yellow robin and its Australian relatives are not closely related to either the European or American robins, but they appear to be an early offshoot of the Passerida group of songbirds. Ranging between 13.5 and 15.5 cm (5+1⁄4 and 6 in) long, it has grey upperparts, and a grey breast and head, broken by whitish streaks near the bill and below the eye, with a conspicuous yellow belly. The sexes are similar in appearance. Two subspecies are recognized: subspecies griseogularis, which has a yellow rump, and subspecies rosinae with an olive-green rump.
The species inhabits open eucalypt jungle, woodland, and scrub, generally favouring habitats with significant understory. Its range comprises the Southwest of Western Australia and the state's southern coastline, as well as the Eyre Peninsula in South Australia. It breeds in a cup-shaped nest in a tree. Predominantly insectivorous, the western yellow robin pounces on prey from a low branch or forages on the ground. Although it is rated as least concern on the International Union for Conservation of Nature (IUCN)'s Red List of Threatened Species, it has declined in parts of its range. (Full article...) -
The Puerto Rican amazon (Amazona vittata), also known as the Puerto Rican parrot (Puerto Rican Spanish: cotorra puertorriqueña) or iguaca, is the only extant parrot endemic to the archipelago of Puerto Rico, and belongs to the Neotropical genus Amazona. Measuring 28–30 cm (11.0–11.8 in), the bird is a predominantly green parrot with a red forehead and white rings around the eyes. Its closest relatives are believed to be the Cuban amazon (Amazona leucocephala) and the Hispaniolan amazon (Amazona ventralis).
The Puerto Rican amazon reaches sexual maturity at between three and four years of age. It reproduces once a year and is a cavity nester. Once the female lays eggs she will remain in the nest and continuously incubate them until hatching. The chicks are fed by both parents and will fledge 60 to 65 days after hatching. This parrot's diet is varied and consists of flowers, fruits, leaves, bark and nectar obtained from the forest canopy.
The species is the only remaining native parrot to Puerto Rico and has been listed as critically endangered by the World Conservation Union since 1994. Once widespread and abundant, the population declined drastically in the 19th and early 20th centuries with the removal of most of its native habitat; the species has completely vanished from Vieques and Mona Island. Conservation efforts commenced in 1968 to save the bird from extinction. (Full article...) -
Przevalski's nuthatch (Sitta przewalskii), originally given the nomen nudum Sitta eckloni, is a bird species in the family Sittidae, collectively known as nuthatches. Long regarded as a subspecies of the white-cheeked nuthatch (Sitta leucopsis), it nevertheless differs significantly in morphology and vocalizations. Both S. przewalskii and S. leucopsis have been regarded as closely related to the North American white-breasted nuthatch (Sitta carolinensis). It is a medium-sized nuthatch, measuring about 13 cm (5 in) in length. Its upper body is a dark gray-blue or slate color, becoming dark blue-black at the crown. The cheeks and throat are a white buff-orange, turning to a rich cinnamon on the underparts that intensifies in color on the sides of the breast. Vocalizations consist of alternating series of ascending whistles and short notes.
The bird is endemic to areas in southeastern Tibet and west central China, including eastern Qinghai, Gansu and Sichuan, inhabiting coniferous montane forest of spruce or fir. The altitude at which it nests varies according to locality, but typically is from 2,250–4,500 m (7,380–14,760 ft). The species was first described in 1891 from a specimen collected in China's Haidong Prefecture. The common name and Latin binomial commemorate the Russian explorer Nikolay Przhevalsky, who first recorded the species in 1884. Little is known about its ecology, which is probably comparable to that of the white-cheeked nuthatch.
It was given the rank of full species (separate from the white-cheeked nuthatch) in 2005 in Pamela C. Rasmussen's Birds of South Asia. The Ripley Guide. Other authorities followed suit, but as of 2014, S. przewalskii does not have a full threat-status evaluation by BirdLife International or the International Union for Conservation of Nature. A 2014 phylogenetic study of the species found it to be at the base of the nuthatch evolutionary tree out of 21 species examined, dispelling a hypothesis that S. przewalskii could belong to the same species as S. carolinensis. (Full article...) -
North Island is the northernmost island in the Houtman Abrolhos, a coral reef archipelago in the Indian Ocean off the coast of Mid West Western Australia. Located about 14 km (9 mi) from the nearest island group, it is one of the largest islands in the Houtman Abrolhos, and one of the few to support dune systems. It has relatively diverse flora dominated by chenopod shrubs and fauna that includes the introduced tammar wallaby, around seven species of reptile, and about 15 resident bird species.
First recorded and surveyed in 1840, North Island has been a seasonal camp for western rock lobster fishermen since the beginning of the 20th century, and this remains the principal focus of human activity on the island. There is also a small amount of tourism, though for the most part it is reserved as conservation habitat for vegetation communities and rare birds. (Full article...) -
The red warbler (Cardellina rubra) is a small passerine bird of the New World warbler family Parulidae endemic to the highlands of Mexico, north of the Isthmus of Tehuantepec. It is closely related to, and forms a superspecies with, the pink-headed warbler of southern Mexico and Guatemala. There are three subspecies, found in disjunct populations, which differ in the color of their ear patch and in the brightness and tone of their body plumage. The adult is bright red, with a white or gray ear patch, depending on the subspecies; young birds are pinkish-brown, with a whitish ear patch and two pale wingbars.
Breeding typically occurs between February and May. The female lays three or four eggs in a domed nest, which she builds on the ground. Though she alone incubates the eggs, both sexes feed the young and remove fecal sacs from the nest. The young fledge within 10–11 days of hatching. The red warbler is an insectivore, gleaning primarily in understory shrubs. Although this bird is considered to be a least-concern species according to the International Union for Conservation of Nature (IUCN), its numbers are thought to be declining due to habitat destruction. (Full article...) -
The red-tailed black cockatoo (Calyptorhynchus banksii) also known as Banksian- or Banks' black cockatoo, is a large black cockatoo native to Australia. Adult males have a characteristic pair of bright red panels on the tail that gives the species its name. It is more common in the drier parts of the continent. Five subspecies are recognised, differing chiefly in beak size. Although the more northerly subspecies are widespread, the two southern subspecies, the forest red-tailed black cockatoo and the south-eastern red-tailed black cockatoo are under threat.
The species is usually found in eucalyptus woodlands, or along water courses. In the more northerly parts of the country, these cockatoos are commonly seen in large flocks. They are seed eaters and cavity nesters, and as such depend on trees with fairly large diameters, generally Eucalyptus. Populations in southeastern Australia are threatened by deforestation and other habitat alterations. Of the black cockatoos, the red-tailed is the most adaptable to aviculture, although black cockatoos are much rarer and much more expensive in aviculture outside Australia. (Full article...)
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Selected general bird topic
Bird feeding is the activity of feeding wild birds, often by means of bird feeders. With a recorded history dating to the 6th century, the feeding of wild birds has been encouraged and celebrated in the United States and United Kingdom, with it being the United States' second most popular hobby having National Bird-Feeding Month congressionally decreed in 1994. Various types of food are provided by various methods; certain combinations of food and method of feeding are known to attract certain bird species.
The feeding of wild birds has been shown to have possible negative as well as positive effects; while a study in Sheffield, England found that the abundance of garden birds increased with levels of bird feeding, multiple reports suggest that bird feeding may have various negative ecological effects and may be detrimental to the birds being fed, including increased risk of predatory action and malnutrition. It has been estimated that American adults spend approximately US$3.8 billion a year on food, feeders and related accessories. (Full article...)Selected taxon
Columbidae (/kəˈlʌmbɪdiː/ kə-LUM-bih-dee) is a bird family consisting of doves and pigeons. It is the only family in the order Columbiformes. These are stout-bodied birds with short necks and short slender bills that in some species feature fleshy ceres. They primarily feed on plants, and can be taxonomically divided amongst granivores, that feed mostly on the ground on seeds, and frugivores, that feed mostly on fruits, from branches. The family occurs worldwide, often in close proximity with humans, but the greatest variety is in the Indomalayan and Australasian realms.
Columbidae contains 344 species divided into 50 genera. 59 species are listed as threatened, and thirteen are extinct, including the dodo, an island bird, and the passenger pigeon, the only bird species not restricted to a small island to go extinct in modern times, even though its flocks were counted in the billions.
In colloquial English, the smaller species tend to be called "doves", and the larger ones "pigeons", although the distinction is not consistent, and there is no scientific separation between them. Historically, the common names for these birds involve a great deal of variation. The bird most commonly referred to as "pigeon" is the domestic pigeon, or rock dove, which is common in many cities as the feral pigeon. (Full article...)Topics
Anatomy: Anatomy • Skeleton • Flight • Eggs • Feathers • Plumage
Evolution and extinction: Evolution • Archaeopteryx • Hybridisation • Late Quaternary prehistoric birds • Fossils • Taxonomy • Extinction
Behaviour: Singing • Intelligence • Migration • Reproduction • Nesting • Incubation • Brood parasites
Bird orders: Struthioniformes • Tinamiformes • Anseriformes • Accipitriformes • Galliformes • Gaviiformes • Podicipediformes • Procellariiformes • Sphenisciformes • Pelecaniformes • Ciconiiformes • Phoenicopteriformes • Falconiformes • Gruiformes • Charadriiformes • Pteroclidiformes • Columbiformes • Psittaciformes • Cuculiformes • Strigiformes • Caprimulgiformes • Apodiformes • Coraciiformes • Piciformes • Trogoniformes • Coliiformes • Passeriformes
Bird lists: Families and orders • Lists by region
Birds and humans: Ringing • Ornithology • Bird collections • Birdwatching • Birdfeeding • Conservation • Aviculture
Quotes
| “ | When I see a bird that walks like a duck and swims like a duck
and quacks like a duck, I call that bird a duck. |
” |
Resources
Free online resources:
- SORA: The Searchable Online Research Archive (SORA) has decades worth of archives of the following journals: The Auk, The Condor, Journal of Field Ornithology, North American Bird Bander, Studies in Avian Biology, Pacific Coast Avifauna, and The Wilson Bulletin. Coverage ends around 2000. The ability to search all journals or browse exists on the front page.
- Notornis: The Journal of the Ornithological Society of New Zealand covers New Zealand and the South Pacific.
- New Zealand Journal of Ecology: This journal often publishes bird-related articles. Like Notornis, this journal is concerned with New Zealand and surrounding areas.
- Marine Ornithology: Published by the numerous seabird research groups, Marine Ornithology is specific and goes back many years.
- BirdLife International: The Data Zone has species accounts for every species, although threatened species and some key groups have greater detail with others only having status and evaluation.
- Author Index: This is a good source for binomial authorities for taxoboxes.
There is also Birds of North America, Cornell University's massive project collecting information on every breeding bird in the ABA area. It is available for US$40 a year.
For more sources, including printed sources, see WikiProject Birds.
WikiProjects
Selected images
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Female mallard in mid-flight at Flying and gliding animals -
Photo credit: MdfThe Bufflehead (Bucephala albeola) is a small American sea duck of the genus Bucephala. The name Bufflehead is a combination of buffalo and head, referring to the oddly bulbous head shape of the species. This is most noticeable when the male puffs out the feathers on the head, thus greatly increasing its apparent size. -
Photo credit: Noodle snacksA New Holland Honeyeater (Phylidonyris novaehollandiae), a honeyeater species native to southern Australia, sitting on a flowering stalk of Phormium tenax with its crown dusted by pollen. It was the first bird to be scientifically described in Australia. It is around 18 cm (7.1 in) long, is mainly black, with a white iris, white facial tufts and yellow margins on its wing and tail feathers. -
The prothonotary warbler (Protonotaria citrea) is a small songbird of the New World warbler family. It breeds in hardwood swamps in southern Canada and the eastern United States and winters in the West Indies, Central America and northern South America. -
Rooster at Chicken -
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Photograph: JJ Harrison -
Photograph: Charles J. SharpA female giant kingfisher (Megaceryle maxima) feeding on a tilapia on Lake Naivasha, Kenya. From left to right, this composite of four images illustrates: 1. the kingfisher returning to its perch with its prey; 2. smashing it against the post to break its spine; 3. holding it; 4. beginning to consume it. -
The Blue-winged Parrot (Neophema chrysostoma) is a small parrot found in Tasmania and southeast Australia. Males (example shown here) are mainly olive green with a blue frontal band reaching from forehead to eye, blue wing coverts, black primaries, and a yellow belly. Females are slightly duller with more green on the wings. -
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Malurus cyaneus cyanochlamys, juvenile -
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Photograph: Yathin S KrishnappaThe groundscraper thrush (Psophocichla litsitsirupa) is a passerine bird of southern and eastern Africa belonging to the thrush family. Four subspecies are known of this bird, which is found in savannas, grasslands and open woodlands. -
Photograph: Charles J. SharpThe yellow-billed shrike (Corvinella corvina) is a common resident breeding bird in tropical Africa, from Senegal east to Uganda, and locally in westernmost Kenya. It frequents forest and other habitats with trees. Although it generally feeds on insects, this shrike may hunt larger prey such as small frogs and mice. -
Photo credit: Fir0002A Restless Flycatcher (Myiagra inquieta) in flight. This passerine bird is found in Australia and Papua New Guinea. It is about 20 cm (8 in) long, with a glossy dark blue crown, a grey back and white underparts. It is similar to the Willie Wagtail, though the lack of a black throat & white eyebrow are distinguishing features. Its main food is insects. -
The Indian Yellow-nosed Albatross (Thalassarche carteri), at 2.55 kg (5.6 lb) in weight, 76 cm (30 in) in length, and 2 m (6.6 ft) across the wings, is the smallest of the mollymawks. These birds are found on several islands in the Indian Ocean. -
Female mallard and ducklings at Burnaby Lake Regional Park -
Photo: JJ HarrisonThe Striated Heron (Butorides striata) is a small heron. When hunting, the species stands still at the water's edge and waits to ambush its prey. It sometimes uses bait, dropping a feather or leaf carefully on the water surface and picking fish that come to investigate. -
Photo: JJ HarrisonThe Dusky Robin (Melanodryas vittata) is a small passerine bird native to Tasmania. A member of the Australian Robin family, it is not related to European or American Robins. It is a brown-plumaged bird of open woodland, measuring 16–17 cm (6.3–6.7 in) in length. -
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Photo: Fir0002The Musk Lorikeet (Glossopsitta concinna) is a species of lorikeet found in south-central/eastern Australia. It grows to about 22 cm (9 in) long, and can be identified by its red forehead, blue crown and a distinctive yellow band on its wing. -
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Photo: JJ HarrisonThe Straw-necked Ibis (Threskiornis spinicollis) is a nomadic bird of the ibis and spoonbill family Threskiornithidae which can be found in Australia, New Guinea, and parts of Indonesia. They eat a variety of food, including molluscs, frogs, grasshoppers, crickets, and locusts. -
Photograph credit: John HarrisonThe white-throated kingfisher (Halcyon smyrnensis) is a tree kingfisher, widely distributed in Asia from the Sinai Peninsula east through the Indian subcontinent to the Philippines. Seen here in the Singapore Botanic Gardens, it perches conspicuously on wires or other exposed perches within its territory, and is a frequent sight in southern Asia. This species mainly hunts large crustaceans, insects, earthworms, rodents, snakes, fish and frogs; it bathes in water but rarely drinks. -
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Chinese goose head at List of goose breeds -
Canada goose -
Photograph credit: Charles J. SharpThe bee-eaters are a group of near passerine birds in the family Meropidae, containing three genera and twenty-seven species. Most species are found in Africa and Asia, with a few in southern Europe, Australia and New Guinea. They are characterised by richly coloured plumage, slender bodies and usually elongated central tail feathers. All have long down-turned bills and medium to long wings, which may be pointed or round. Male and female plumages are usually similar. As their name suggests, bee-eaters predominantly eat flying insects, especially bees and wasps, which are caught in the air by flights from an open perch. The stinger is removed by repeatedly hitting and rubbing the insect on a hard surface. During this process, pressure is applied to the insect, thereby extracting most of the venom.
This composite, taken in 2016, shows six bee-eaters of the genus Merops found in Africa. Clockwise from top left, the species depicted are the blue-cheeked bee-eater (M. persicus chrysocercus), the cinnamon-chested bee-eater (M. oreobates), the little bee-eater (M. pusillus pusillus), the white-throated bee-eater (M. albicollis), the swallow-tailed bee-eater (M. hirundineus chrysolaimus) and the European bee-eater (M. apiaster).
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Selected bird anatomy topic
A gorget is a patch of colored feathers found on the throat or upper breast of some species of birds. It is a feature found on many male hummingbirds, particularly those found in North America; these gorgets are typically iridescent. Other species, such as the purple-throated fruitcrow and chukar partridge, also show the feature. The term is derived from the gorget used in military armor to protect the throat.
Feather wear and exposure to the sun can produce changes in the apparent color of iridescent gorget feathers. For example, fresh gorget feathers on the Anna's hummingbird are rose red; these fade to a coppery bronzy color with age. (Full article...)Selected species
Did you know
- ...that the bar-tailed godwit undertakes the longest non-stop migration flight of any bird?
- ...that the black-rumped flameback is a common woodpecker from South Asia?
- ...that the extinction of the Laysan rail was caused by a US Navy landing craft accidentally breaking free and drifting ashore at Midway Atoll, enabling onboard rats to colonize the islands?
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Taxonomy of Aves
| Class Aves, divided into superorders, orders, suborders (where indicated), and families. | ||||
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Wikisource
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Wiktionary
Dictionary and thesaurus
Sources
- ^ Platt, S.; Library of Congress (1993). Respectfully Quoted: A Dictionary of Quotations. Barnes & Noble Books. p. 242. ISBN 978-0-88029-768-4. Retrieved February 7, 2020.
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