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 scaup, a medium-sized black and white diving duck, is one of the most abundant and widespread of North American ducks. Its core nesting habitats are in boreal forests and parklands from ...

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 ...

Over the last 20 years scaup numbers have declined, and these declines have been greatest in the northern boreal forests of Canada and Alaska where most lesser scaup (Aythya affinis) nest. We studied ...

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 ...