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Greater scaup
Aythya marila, Linnaeus, 1761
It is a migratory species of diving duck. It nests on tundra mountain lakes that are rich in vegetation, as well as on sea coasts and marshes. When foraging, it dives as deep as 6 metres. Like most sea ducks, it is sociable and together with other duck species it forms flocks, which count several thousand birds. In Poland, greater scaups appear for wintering (from September to November) and remain until bodies of water freeze.
Distribution: Iceland, Scandinavian Peninsula, Kamchatka, Aleutian Islands, Alaska, Canadian coast
male / female
body length: 40–50 cm
wingspan: 172–83 cm
body mass: 0,9–1,2 kg