The only circumpolar diving duck, the Greater Scaup breeds across the tundra regions in North America and Europe. They congregate by the hundreds and thousands along the Pacific and …

The greater scaup (Aythya marila), just scaup in Europe or, colloquially, "bluebill" in North America, [3] is a mid-sized diving duck, larger than the closely related lesser scaup and tufted …

The only circumpolar diving duck, the Greater Scaup breeds across the tundra regions in North America and Europe. They congregate by the hundreds and thousands along the Pacific and …

Audubon’s scientists have used 140 million bird observations and sophisticated climate models to project how climate change will affect the range of the Greater Scaup. Learn even more in our …

2015年1月3日 · At least some of the sleeping ducks look like the peak of the head is toward the front of the head or have a flat appearance, indicating these are Greater Scaup. The birds in …

The only circumpolar diving duck, the Greater Scaup breeds across the tundra regions in North America and Europe. They congregate by the hundreds and thousands along the Pacific and …

Greater scaup make extensive flights across the boreal forests of Canada prior to reaching their wintering grounds along the Atlantic coast and the Great Lakes, or migrate offshore from …

Round-headed diving duck. Males have black breast, medium gray back, white sides, and yellow eye. Head appears black with a greenish sheen in good lighting, never purplish. Females are …

2017年1月19日 · Once Ring-necked and Tufted Ducks are out of the running, you’re left with the pair that’s toughest to tell apart: scaup. During winter, location can be a deciding factor. …

The Greater scaup (Aythya marila) is a diving duck also known as scaup in Europe or, colloquially, "bluebill" in North America. The name of this bird may come from "scalp", a …