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Aythya Reference Libraries

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Madagascar Pochard Aythya innotata
2013-04-23 13:18:30

The Madagascar Pochard (Aythya innotata) is an exceptionally rare diving duck belonging to the genus Aythya. Thought to be extinct in the late 1990s, specimens of this species were rediscovered at Lake Matsaborimena in Madagascar in 2006. Only 60 individuals remain after 18 ducklings hatched in a captive breeding center in April 2012. Based on the accounts written by Webb and Delacour’s in...

Hardhead Aythya australis
2013-01-02 11:55:50

The Hardhead (aythya australis), also known as the White-eyed Duck is the only true diving duck found in Australia. Hardheads are familiar in the south-east of Australia, especially in the Murray-Darling Basin, but also in the wetter country near the coasts. They are somewhat drifting in normal years, but disperse widely in times of drought. Significant numbers reach as far afield as New...

Baers Pochard Aythya baeri
2012-03-22 18:39:44

Baer’s Pochard, (Aythya baeri), is a species of diving duck found in southeast Russia and northeast China. It migrates in winter months to southern China, Vietnam, Japan and India. Its habitat is lakes with rich aquatic vegetation. It nests in dense grass, flooded tussock meadows, or flooded shrubby meadows. In Liaoning, China, it is typically found in densely vegetated coastal wetlands, or...

Ferruginous Duck Aythya nyroca
2012-01-12 23:11:03

The Ferruginous Duck (Aythya nyroca) is a medium-sized species of diving duck found in Eurasia. Its breeding habitat is marshland and lakes with water depth of at least 3-4 feet. It breeds in southern and eastern Europe and southern and western Asia. It is somewhat migratory, and winters farther south into north Africa. It is one of the species to which the Agreement on the Conservation of...

Greater Scaup
2009-01-17 14:55:32

The Greater Scaup (Aythya marila) or just Scaup in Europe, is a species diving duck found in northern Arctic and sub-Arctic North America and Asia. Its habitat is lakes and bogs on the tundra and at the northern limits of the boreal forest. These birds migrate further south to coastal waters in winter. In North America, Greater Scaup populations have been on a steady decline since the 1990's....

Common Pochard
2009-01-17 14:28:55

The Common Pochard (Aythya ferina) is a species of diving duck found in temperate and northern Europe into Asia. Their habitat is marshes and lakes that are more than 3 feet in depth. They are migratory, and winter in southern Europe and points west. In the British Isles, birds breed in eastern England and lowland Scotland, and in small numbers in Northern Ireland. Large numbers over-winter in...

Lesser Scaup
2005-06-08 11:41:04

The Lesser Scaup (Aythya affinis) is a small diving duck; smaller than the Greater Scaup. Adults have a blue bill and yellow eyes. Adult males have a dark head with a purple sheen, a black breast, a light back, a black tail and a white bottom. Adult females have a white band at the base of the bill and a brown head and body. They breed in marsh ponds throughout Alaska and western Canada....

Redhead duck
2005-06-02 10:25:18

The Redhead (Aythya americana) is a medium-sized diving duck. The adult male has a blue bill, a red head and neck, a black breast, yellow eyes and a grey back. The adult female has a brown head and body and a darker bluish bill with a black tip. Their breeding habitat can be found in marshes and prairie potholes throughout western North America. Loss of nesting habitat has led to sharply...

Ring-necked Duck
2005-06-02 10:11:05

The Ring-necked Duck (Aythya collaris) is a smaller diving duck found in wooded lakes or ponds in the northern United States and Canada. The adult male has a grey bill with a white band, a shiny purple head, a white breast, yellow eyes and a dark grey back. The adult female has a pale brown head and body with a dark brown back, a dark bill with a more subtle light band than the male and...

Word of the Day
lunula
  • A small crescent-shaped structure or marking, especially the white area at the base of a fingernail that resembles a half-moon.
This word is a diminutive of the Latin 'luna,' moon.
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