The greater scaup, just scaup in Europe or, colloquially, "bluebill" in North America, is a mid-sized diving duck, larger than the closely related lesser scaup. It spends the summer months breeding in Alaska, northern Canada, Siberia, and the northernmost reaches of Europe. During the winter, it migrates south to the coasts of North America, Europe, and Japan.
Image: Greater scaup male 2
Image: Aythya marila f Humber Bay Toronto
Egg, Collection Museum Wiesbaden
Flock feeding in Tokyo bay, Japan
The diving ducks, commonly called pochards or scaups, are a category of duck which feed by diving beneath the surface of the water. They are part of Anatidae, the diverse and very large family that includes ducks, geese, and swans.
Diving duck
Female A. australis, the only Australian representative of Aythyinae