The Greater Scaup is a medium-sized diving duck that breeds in northern parts of the Northern Hemisphere, including much of Alaska and northern Canada, and far northern parts of Russia and Europe.
Greater Scaups are closely related to Lesser Scaups. Breeding males of both species have dark bodies and heads with light backs. Lesser Scaups are smaller and have a different head shape.
The Greater Scaup has a large natural range and the conservation status is considered to be Least Concern as of September 2013.