This week’s nature series features the Lesser Scaup, Aythya affinis, one of our most common diving ducks that is well known to hunters as the little bluebill or broadbill. This bird is common locally ...

The lesser and greater scaup are better known as bluebills. As the nickname implies, both subspecies have blue bills, and the two birds are very difficult to differentiate. Each is part of the diving ...

The scaup, it could be said, are difficult ducks to deal with. Two species occur in North America, but you can’t tell by looking. Well, you can, but you have to know what you’re looking for, and you ...

Identifying environmental metrics specific to lesser scaup (Aythya affînis; scaup) spring migration chronology may help inform development of conservation, management and population monitoring. Our ...

We observed the underwater behavior of captive Canvasbacks (Aythya valisineria), Lesser Scaups (A. affinis), and Ruddy Ducks (Oxyura jamaicensis) while they foraged on a variety of food items in a ...