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The Mariana mallard was a resident allopatric population – in most respects a good species – apparently initially derived from mallard-Pacific black duck hybrids; [139] it became extinct in the late 20th century. [140] The Laysan duck is an insular relative of the mallard, with a very small and fluctuating population.
The eastern spot-billed duck or Chinese spot-billed duck (Anas zonorhyncha) is a species of dabbling duck that breeds in East and Southeast Asia. This species was formerly considered a subspecies of the Indian spot-billed duck and both were referred to as the spot-billed duck (A. poecilorhyncha). The name is derived from the yellow spot on the ...
The mottled duck (Anas fulvigula) [note 1] or mottled mallard is a medium-sized species of dabbling duck. It is intermediate in appearance between the female mallard and the American black duck . It is closely related to those species , and is sometimes erroneously considered a subspecies of the former.
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The hybrids often resemble a dark coloured mallard with a white breast. Mallard ducks also hybridise with the Muscovy duck producing pied offspring. Hybrids between the ruddy duck and white-headed duck are undesirable in parts of Europe [24] [25] where the introduced ruddy duck has bred with native white-headed ducks. The increasing number of ...
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 duck's common name is based on early European inhabitants of North America's assertion that its back was a canvas-like color. [4] In other languages it is just a white-backed duck; for example in French, morillon à dos blanc, or Spanish, pato lomo blanco. [5] In Mexico it is called pato coacoxtle. [6]
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