It is the size of a football and a half and is sometimes called, the ”Little Bluebill” or “Broadbill” because its bill looks quite blue. Lesser scaup breed from central Alaska through the boreal forests of Canada and south through Michigan, Wisconsin, Minnesota, the Dakotas and Montana. Fun Facts: Lesser and Greater Scaups are often called “Bluebills”, because of, naturally, their bill color. The head is much smaller on the Lesser Scaup, when compared to the larger head, which also has a different profile. Lesser Scaup Images. The Lesser Scaup, Aythya affinis, drake has a black head with a purplish sheen, gray bill with a black tip, black breast with white flanks and a black rump. Lesser Scaup occur throughout most of the U.S. and Canada, breeding in northwestern portions of the U.S. north to Alaska, and wintering across a broad swath of the central and southern U.S., as well as the Pacific, Gulf, and Atlantic Coasts. Lesser scaup mate in the spring and typically lay eggs (eight to 10 per nest) in late May or early June.

They are easier to distinguish between each other when the two birds are side by side.

It is colloquially known as the Little Bluebill or Broadbill. One of the most numerous and widespread diving ducks in North America, especially on inland waters. Drake Lesser Scaup in early March. Lesser Scaup eat primarily aquatic invertebrates such as mollusks, insects, and crustaceans, but they also eat... Nesting. Behavior. Back to Birds. The Lesser Scaup nests near prairie wetlands. The population is generally … Aythya affinis Identification.

Note also the smaller bill with a small nail at the tip. Head, neck and breast are black with purple gloss. The white wing stripe is restricted to the secondary wing feathers; the wing stripe on the primaries is gray.

Lesser Scaup: Medium-sized diving duck has finely barred gray back and gray-washed white underparts. Lesser Scaup. General description: Medium sized diving duck, shaped like a bulb. Lesser Scaup Images, Facts and Information: Aythya affinis. A strong and fast flier, it is able to take flight by springing up directly from the water, without the laborious take-off … Although the Lesser Scaup has Lesser Scaupthe largest population of any species of diving duck in North America, their population has been steadily declining since the mid-1980s.

Lesser Scaup breed in the prairie pothole region in the United States and Canada north throughout the boreal... Food.

Lesser Scaup General Description. Aythya affinis, the Lesser Scaup, is a small North American diving duck that migrates south as far as Central America in winter. The back is mottled with black and white. It is a diving duck that forages mainly for invertebrates, which it prefers over plants.

Drakes of both species appear similar from afar, with dark heads, white flanks, and gray backs.
Location: Salt Lake County, Utah. Male Lesser Scaups have... Habitat. Although it mixes freely with other diving ducks on large lakes in winter, the Ring-neck is also found on small, tree-lined ponds, and associating with dabbling ducks on shallow waters.

It is apparently a very close relative of the Holarctic Greater Scaup or bluebill, with which it forms a superspecies. In winter often seen on lakes and bays in dense flocks, numbering hundreds or even thousands, and often with no other species of ducks associated with them.
Weight: 1... Reproduction. The rest of the back is white with fine black barring. In lesser scaup, the adult male’s head is angular or peaked, not rounded as in the greater scaup, and it has a purple (not green) sheen. South and east of this area, they are decidedly sporadic in their nesting attempts.


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