Английская Википедия:Galápagos shearwater

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The Galápagos shearwater (Puffinus subalaris) is a small shearwater. Until recently it was considered to be a subspecies of Audubon's shearwater, but it is actually one of two members of a very ancient lineage of the small Puffinus species, the other being, as indicated by mtDNA cytochrome b sequence data, the Christmas shearwater.[1]

It is an endemic breeder of the Galápagos Islands, and is largely sedentary, although individuals are commonly seen as far as the Oaxacan coast of Mexico.[2]

Description

The Galápagos shearwater has dark brown upperparts, undertail and underwing flight feathers, the rest of the underparts plumage being white. It sometimes has a dark collar. Both sexes are alike, as are the young after fledging.[2]

It is a slender-bodied shearwater, about 29–31 cm long, with a wingspan of around 63 cm and weighs 123-225 g. The species closely resembles the tropical shearwater, although the latter is typically blacker and has a longer tail.[2]

Behaviour

The Galápagos shearwater is a gregarious species and will feed at sea with other shearwaters and boobies. It flies low over the water and feeds on squid, fish and offal. It intersperses 4-10 stiff wing beats with shallow glides.[2]

References

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External links

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  1. Шаблон:Cite journal
  2. 2,0 2,1 2,2 2,3 Onley, and Scofield, Albatrosses, Petrels and Shearwaters of the World (Helm 2007) Шаблон:ISBN