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

As the spring thaw begins to open bodies of water, ducks begin to migrate through Teller County. Although Teller is rather dry, rivers and lakes do attract some diving ducks that like deeper water.

Lesser scaup (Aythya affinis) populations have been declining since the late 1970s. One of the explanations to account for this decline, the spring-condition hypothesis (SCH), is based on the premise ...

Bluebill No. 72884 is resting just east of the Twin Cities, preparing for her final flight north to breeding grounds in Canada, North Dakota or northern Minnesota. She is among 16 lesser scaup, or ...

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 ...

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 ...

They're out there right now off the shores of San Francisco Bay, sometimes rafting up in large groups to resist the wind, sometimes diving beneath the gray water to feed: big, handsome ducks with ...

In the 1990s, when snow and rain returned to the prairies and parklands after a long period of drought, and when conservation programs expanded upland cover in the U.S. Prairie Pothole Region, most ...