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The Long_tailed Duck (Clangula hyemalis) is a medium_sized sea duck. It is the only member of its genus, Clangula.
Adults have white underparts. The male has a long pointed tail and a dark bill lighter near the tip. In winter, the male has a dark cheek patch on a mainly white head and neck, a dark breast and mostly white body. In summer, the male is dark on the head, neck and back with a white cheek patch. The female has a brown back and a relatively short pointed tail. In winter, the female's head and neck are white with a dark crown. In summer, the head is dark.
Their breeding habitat is cold northern oceans and large lakes in the North Atlantic region, Canada, northern Russia. The nest is located on the ground near water; it is built using vegetation and lined with down.
They are migratory and winter along the eastern and western coasts of North America, on the Great Lakes, coastal Europe and Asia. This is a gregarious duck, and will form large flocks at that time of year. The most important wintering area is the Baltic Sea, where a total of about 4.5 million gather.
They feed by diving, swimming underwater. They mainly eat mollusks, crustaceans and some small fish. Although they usually feed close to the surface, they are capable of diving to depths of 60m (200 feet).
The males are vocal and have a musical yodelling call Ow, ow, owal-ow.
It used to be known in North America as the "Oldsquaw", but this caused offence to some Native American tribes ('squaw' being a derogatory term for a prostitute in one Native American language), so the name Long-tailed Duck has now been officially adopted there too.
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