Saturday, December 15, 2012

Arctic Skua


Animal You | Arctic Skua | Jaeger parasite, also known as the Arctic Skua or Parasitic Skua (Stercorarius parasiticus) a seabird Stercorariidae skua family. This species breeds in northern Eurasia and North America with significant populations south to the north of Scotland. It nests on dry tundra, higher peaks and islands, with a maximum of four olive-brown eggs. This bird eats rodents, small birds and insects, but also robs gulls and terns catch.

Identification is performed by long-tailed Skua similarities and Pomarine Jaeger, and the existence of three types of stains complicated. As small to Jaeger parasitic skua weighs 41-48 cm (16-19 inches) long, 107-125 cm (42-49 inches) and 300-650 g scale (0.66 to 1.4 pounds). Adult white morph has a back light brown, mostly white undersides of the wings and dark primary feathers with a "flash".

Adults are dark brown dark morph and intermediate stages birds are dark with a little paler underside, head and neck. All samples have flashing white wings. Juveniles are more problematic, and are difficult to separate long tail Jaegers.   

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