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An American black duck (upper left) and a male mallard (lower right) in eclipse plumage [25]: 506 Two months after hatching, the fledgling period has ended, and the duckling is now a juvenile. [34] The duckling is able to fly 50–60 days after hatching.
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.
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.
This is supported by the observation that in mallard × American black duck hybrids, females of both taxa prefer the sexually dimorphic mallard drakes over the dull-plumaged black duck drakes; [23] [24] that the green-winged teal is in some aspects—such as the less contrasting nuptial plumage—intermediate between the common and speckled ...
Mandarin duck (male) in eclipse plumage. Many male ducks have bright, colourful plumage, exhibiting strong sexual dimorphism. However, they moult into a dull plumage after breeding in mid-summer. This drab, female-like appearance is called eclipse plumage. When they shed feathers to go into an eclipse, the ducks become flightless for a short ...
The American black duck (Anas rubripes) is a large dabbling duck in the family Anatidae.It was described by William Brewster in 1902. It is the heaviest species in the genus Anas, weighing 720–1,640 g (1.59–3.62 lb) on average and measuring 54–59 cm (21–23 in) in length with an 88–95 cm (35–37 in) wingspan.
The hooded merganser (Lophodytes cucullatus) is a species of fish-eating duck in the subfamily Anatinae.It is the only extant species in the genus Lophodytes.The genus name derives from the Greek language: lophos meaning 'crest', and dutes meaning 'diver'.
The unique plumage of a juvenile bird is known as juvenal (or less precisely, juvenile) plumage. [ 2 ] When the bird is molting, the molt is known as a prejuvenal, prebasic, prealternate, or presupplemental molt, depending on which type follows the molt.