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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.
A duckling is a young duck in downy plumage [1] or baby duck, [2] but in the food trade a young domestic duck which has just reached adult size and bulk and its meat is still fully tender, is sometimes labelled as a duckling. A male is called a drake and the female is called a duck, or in ornithology a hen. [3] [4] Male mallard. Wood ducks.
Most breeds and varieties of domestic duck derive from the mallard, Anas platyrhynchos; a few derive from Cairina moschata, the Muscovy duck, or are mulards, hybrids of these with A. platyrhynchos stock. [2] Domestication has greatly altered their characteristics. Domestic ducks are mostly promiscuous, where wild mallards are monogamous ...
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A crest of feathers may appear in any duck breed or type deriving from the wild Mallard, Anas platyrhynchos, with a frequency of some 0.0001%–0.001% of all eggs hatched. [9]: 89 It results from the action of a very variable autosomal dominant allele, which is semi-lethal and may display incomplete penetrance as well as incomplete dominance.
Donald Duck initially started as a minor character. The notoriously grumpy made his first cartoon appearance on June 9, 1934 as a supporting character in the short The Wise Little Hen.
The female is light brown, with plumage much like a female mallard. It can be distinguished from that species by the dark orange-edged bill, smaller size, the white speculum, and white belly. [12] Both sexes go through two moults annually, following a juvenile moult. [10] The gadwall is a quieter duck, except during its courtship display.