Species
Aythya marila (Greater scaup)
Aythya marila. Photo: (c) Анна Голубева, some rights reserved (CC BY-NC-ND)
The greater scaup (Aythya marila), 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.
Sightings
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