|Red-backed shrike (Lanius collurio)|
The family name, and that of the largest genus, Lanius, is derived from the Latin word for "butcher", and some shrikes are also known as butcherbirds because of their feeding habits. The common English name shrike is from Old English scrīc, alluding to the shrike's shriek-like call.
Distribution, migration, and habitatEdit
Most shrike species have a Eurasian and African distribution, with just two breeding in North America (the loggerhead and northern shrikes). No members of this family occur in South America or Australia, although one species reaches New Guinea. The shrikes vary in the extent of their ranges, with some species such as the great grey shrike ranging across the Northern Hemisphere to the Newton's fiscal which is restricted to the island of São Tomé.
They inhabit open habitats, especially steppe and savannah. A few species of shrikes are forest dwellers, seldom occurring in open habitats. Some species breed in northern latitudes during the summer, then migrate to warmer climes for the winter.
Shrikes are medium-sized birds with grey, brown, or black and white plumage. Most species are between 16 cm (6.3 in) and 25 cm (9.8 in) in size, however, the genus Corvinella with its extremely elongated tail feathers may reach up to 50 cm (20 in) in length. Their beaks are hooked, like those of a bird of prey, reflecting their predatory nature, and their calls are strident.
Shrikes are known for their habit of catching insects and small vertebrates and impaling their bodies on thorns, the spikes on barbed-wire fences, or any available sharp point. This helps them to tear the flesh into smaller, more conveniently sized fragments, and serves as a cache so that the shrike can return to the uneaten portions at a later time. This same behaviour of impaling insects serves as an adaptation to eating the toxic lubber grasshopper, Romalea microptera. The bird waits 1–2 days for the toxins within the grasshopper to degrade before eating it.
Shrikes are territorial, and these territories are defended from other pairs. In migratory species, a breeding territory is defended in the breeding grounds and a smaller feeding territory is established during migration and in the wintering grounds. Where several species of shrikes exist together, competition for territories can be intense.
Shrikes make regular use of exposed perch sites, where they adopt a conspicuous upright stance. These sites are used to watch for prey and to advertise their presence to rivals.
Shrikes are generally monogamous breeders, although polygyny has been recorded in some species. Co-operative breeding, where younger birds help their parents raise the next generation of young, has been recorded in both species in the genera Eurocephalus and Corvinella, as well as one species of Lanius. Males attract females to their territory with well-stocked caches, which may include inedible but brightly coloured items. During courtship, the male performs a ritualised dance which includes actions that mimic the skewering of prey on thorns, and feeds the female. Shrikes make simple, cup-shaped nests from twigs and grasses, in bushes and the lower branches of trees.
Species in taxonomic orderEdit
|Lanius Linnaeus, 1758||
|Corvinella Lesson, 1831||
|Eurocephalus A. Smith, 1836|
|Urolestes Cabanis, 1851||
Birds with similar namesEdit
Other species with names including the word shrike, due to perceived similarities in morphology, are in the families:
- Vangidae, vangas, helmetshrikes, woodshrikes, flycatcher-shrikes, shrike-flycatchers and philentomas
- Malaconotidae, bushshrikes, puffbacks, tchagras and boubous
- Campephagidae, cuckooshrikes, trillers and cicadabirds
- Falcunculidae, shriketits
- Pachycephalidae, whistlers and shrikethrushes
- Platylophidae, the crested shrikejay
- Vireonidae, vireos, including Cyclarhis peppershrikes, Vireolanius shrike-vireos and Pteruthius shrike-babblers
- Platysteiridae, wattle-eyes and batises, including the white-tailed shrike
- Thraupidae, tanagers, including the shrike-like tanager and Lanio shrike-tanagers
- Monarchidae, monarchs, including Clytorhynchus shrikebills
- Thamnophilidae, antbirds, antshrikes, antwrens and antvireos
- Tyrannidae tyrant flycatchers, including Agriornis shrike-tyrants
- Tityridae, becards and allies, including Laniisoma shrike-like cotingas
The helmetshrikes and bushshrikes were formerly included in Laniidae, but they are now known to be not particularly closely related to true shrikes.
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- "Shrike". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
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- Sustaita, Diego; Rubega, Margaret A.; Farabaugh, Susan M. (2018). "Come on baby, let's do the twist: the kinematics of killing in loggerhead shrikes". Biology Letters. 14 (9). doi:10.1098/rsbl.2018.0321. PMC 6170751. PMID 30185607.
- Rafinesque, Constantine Samuel (1815). Analyse de la nature ou, Tableau de l'univers et des corps organisés (in French). Palermo: Self-published. p. 67.
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- Gill, Frank; Donsker, David, eds. (2019). "Shrikes, vireos & shrike-babblers". World Bird List Version 9.2. International Ornithologists' Union. Retrieved 14 August 2019.
- Fuchs, J.; Alström, P.; Yosef, R.; Olsson, U. (2019). "Miocene diversification of an open‐habitat predatorial passerine radiation, the shrikes (Aves: Passeriformes: Laniidae)" (PDF). Zoologica Scripta. 48 (5): 571–588. doi:10.1111/zsc.12363. S2CID 202027002.
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