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The lakes chosen are used yearly by the same ducks. The optimal moulting lake is fairly shallow and has an abundance of food sources and cover. [26] The female lays six to nine olive-buff-coloured eggs, [27] which she incubates for 24–28 days. [28] A larger clutch could indicate brood parasitism by other greater scaups or even ducks of other ...
The blue-billed duck (Oxyura australis) is a small Australian stiff-tailed duck, with both the male and female growing to a length of 40 cm (16 in). [ 2 ] [ 3 ] The male has a slate-blue bill which changes to bright-blue during the breeding season, hence the duck's common name.
Female and immature hybrids typically lack the white bill base, except in those between lesser scaup and ring-necked duck, where the white extends to the eye region. But especially with juveniles, the bi-colored bill of hybrids is most diagnostic. Hybrid combinations that are known from the wild and resemble the lesser scaup are:
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.
Aug. 18—MEMPHIS, Tenn. — Continental breeding duck populations are down 7% from 2022, Ducks Unlimited said Friday, Aug. 18, in reporting results from the annual spring North American waterfowl ...
Unusually for a bird with such a large range, it has no geographical subspecies if the possibly conspecific duck Eaton's pintail is considered to be a separate species. This is a large duck, and the male's long central tail feathers give rise to the species' English and scientific names. Both sexes have blue-grey bills and grey legs and feet.
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The blue duck (Hymenolaimus malacorhynchos) or whio is a member of the duck, goose and swan family Anatidae endemic to New Zealand. It is the only member of the genus Hymenolaimus . Its exact taxonomic status is still unresolved, but it appears to be most closely related to the tribe Anatini , the dabbling ducks.