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The Hook Bill is a light duck, with an average weight of approximately 2 kg. [6]: 417 Three colour variants are recognised in France, the Netherlands and the United Kingdom: [8] the dusky mallard has a black head and rump with green lustre, the body in shades of grey with no white neck-ring, and a slate-grey beak; the white-bibbed dusky mallard is similarly coloured, but with a distinct white ...
The eastern spot-billed duck was described by the English biologist Robert Swinhoe in 1866 under its current binomial name Anas zonorhyncha. [2] [3] The name of the genus Anas is the Latin word for a duck. The specific epithet zonorhyncha is derived from the classical Greek words zōnē meaning "band" or "girdle" and rhunkhos meaning "bill". [4]
The Silver Appleyard is a "large, sturdily built duck" with a "blocky" physique and a prominent breast. When full grown it weighs between six and eight pounds. [14] Drakes of this breed have a yellow or greenish-coloured bill which sometimes takes on a striated appearance when the duck is older. The drake has a chestnut red breast, flank, sides ...
The Indian spot-billed duck was described by the naturalist Johann Reinhold Forster in 1781 under its current binomial name Anas poecilorhyncha. [2] [3] The name of the genus Anas is the Latin word for a duck. The specific epithet poecilorhyncha combines the classical Greek words poikilos meaning "pied" or "spotted" and rhunkhos meaning a "bill ...
Adult females, however, have a yellow to brown head and neck. The breast is brown, the belly is white and the rest of the body is a gray to brown. The female bills are slate with a dark tip that is separated by a blue ring. Females remain the same color year round. [6] The eyes are brown, as in all other Aythya species. [4]
The harlequin duck (Histrionicus histrionicus) is a small sea duck. It takes its name from Harlequin (Italian Arlecchino, French Arlequin ), a colourfully dressed character in Commedia dell'arte . The species name comes from the Latin word "histrio", meaning "actor".
Several species of duck have brown-plumaged females that can be confused with the female mallard. [38] The female gadwall (Mareca strepera) has an orange-lined bill, white belly, black and white speculum that is seen as a white square on the wings in flight, and is a smaller bird.
This is a list of the breeds of domestic duck which have official recognition at national or international level. [1]Most breeds of duck derive from the wild mallard, Anas platyrhynchos, while a small minority are descendants of the Muscovy duck, Cairina moschata.