Lesser Scaup become sexually mature in their first or second summer.

The male lesser scaup has a purple head and a black neck, with a gray-white body.

The county's most common winter bird is the Lesser Scaup, a diving duck.

Lesser Scaup females and immatures tend to have less white around the bill, but this too varies considerably between individual birds.

During aerial population surveys Greater and Lesser Scaup are counted together, because they look almost identical from the air.

A raft of lesser scaup, debris from moontides and an abundance of water chestnuts were observed.

Hybrid combinations that are known from the wild and resemble the Lesser Scaup are:

There are two varieties of scaup that winter in Connecticut, the greater scaup and lesser scaup.

Relative foraging value to lesser scaup ducks of native and exotic clams from San Francisco Bay.

A number of diving ducks, including the lesser scaup and redhead, nest on the larger ponds and adjacent wet meadows.

For example, the Greater Scaup has a wider black nail than does the very similar Lesser Scaup.

'Britain's First Lesser Scaup' article from Twitching, vol.

Aythya affinis (Lesser Scaup duck)

Lesser Scaup are thought to comprise slightly less than nine-tenths of the scaup population of North America.

Tyzzeria perniciosa - lesser scaup (Aythya affinis)

The types of waterfowl in the area include Northern pintail, Lesser Scaup, and Red-throated loon.

Lesser Scaup drakes in nuptial plumage are often said to be recognizable by the purple instead of green sheen of the head and a darker back.

Lesser Scaup forage mainly by sifting through the bottom mud, usually after diving and swimming underwater, occasionally by dabbling without diving.

From November through March large numbers of waterfowl, especially canvasback, redhead, lesser scaup, common goldeneye and common merganser are all found in the nearby waters.

Lesser Scaup females show the characteristic darker iris (bright yellow in Greater Scaup males and females) at closer distances.

The Lesser Scaup drake presents the opposite shape, with a less bulging forehead and a nape that looks strongly curved or even angular due to the small crest.

Migratory species include woodcock, Canada geese, redhead duck, ring-necked duck, canvasback duck, greater scaup and lesser scaup.

The Lesser Scaup (Aythya affinis) is a small North American diving duck that migrates south as far as Central America in winter.

Female and immature hybrids typically lack the white bill base, except in those between Lesser Scaup and Ring-necked Duck, where the white extends to the eye region.

Hybrids between the Lesser Scaup and the Redhead (A. americana) are recognizable by the lack of contrast between wings and belly and the dull brownish head.

The Lesser Scaup (Aythya affinis) is a small North American diving duck that migrates south as far as Central America in winter.