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Canvasback duck diving In the early 1950s it was estimated that there were 225,000 canvasbacks wintering in the Chesapeake Bay ; this represented one-half of the entire North American population. By 1985, there were only 50,000 ducks wintering there, or one-tenth of the population.
Aythya is a genus of diving ducks, with twelve species currently accepted. [2] The genus was described in 1822 by the German zoologist Friedrich Boie, with the type species being greater scaup. [3] [4] The name Aythya comes from the Ancient Greek word αἴθυιᾰ (aithuia), which referred to an unknown diving-bird. [5] [6]
The common pochard is a plump, medium-sized diving duck, measuring 42–49 cm (17–19 in) in length, with a wingspan of 72–82 cm (28–32 in). [ 13 ] [ 14 ] [ 15 ] It is stocky and short-tailed, with a sloping forehead and relatively long bill .
The diving ducks, commonly called pochards or scaups, are a category of duck which feed by diving beneath the surface of the water. They are part of Anatidae, the diverse and very large family that includes ducks, geese, and swans. The diving ducks are placed in a distinct tribe in the subfamily Anatinae, the Aythyini.
Pochard is a common name used for several species of diving ducks: Four species in the genus Aythya: Common pochard, Aythya ferina; Baer's pochard, Aythya baeri; Ferruginous pochard, Aythya nyroca; Madagascar pochard, Aythya innotata; Three species in the genus Netta: Red-crested pochard, Netta rufina; Rosy-billed pochard or Rosybill, Netta ...
The redhead is a pochard, a diving duck specially adapted to foraging underwater. Their legs are placed further back on the body, which makes walking on land difficult. The webbing on their feet is larger than dabbling ducks and their bills are broader to facilitate underwater foraging.
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Pages in category "Diving ducks" ... Ring-necked duck This page was last edited on 22 July 2019, at 20:10 (UTC). Text is available under the Creative Commons ...