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Galapagos Shearwater (Puffinus subalaris) - Wiki
| Subject: | Galapagos Shearwater (Puffinus subalaris) - Wiki
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Date: 2007:08:12 20:23:19
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Upload Date: 2007:12:12 19:07:20
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Gal??pagos Shearwater
From Wikipedia, the free encyclopedia
Order: Procellariiformes
Family: Procellariidae
[Photo] Galapagos Shearwaters (Puffinus subalaris) in flight. Source: Flickr (www.flickr.com/photos/putneymark/1288379130/in/set-72157601810082531/). Date: August 12, 2007. Author: Putney Mark (www.flickr.com/photos/putneymark).
The Gal??pagos 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 (Austin et al., 2004).
It is endemic to the Gal??pagos Islands, and is largely sedentary, although individuals may wander as far as the Mexican coast.
Description
The Gal??pagos 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.
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.
Behaviour
The Gal??pagos 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.
http://en.wikipedia.org/wiki/Gal%C3%A1pagos_Shearwater
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