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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.
Ducks typically live outside and have a lifespan of about 10 years. Temperament-wise it's sort of a mixed bag. Pekin ducks are known for being friendly and calm, while other breeds might be ...
Domestic ducks are mostly promiscuous, where wild mallards are monogamous. Domestic ducks have lost the mallard's territorial behaviour, and are less aggressive than mallards. [7] [8] Despite these differences, domestic ducks frequently mate with wild mallard, producing fully fertile hybrid offspring. [9]
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 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.
The Laysan duck is a poor flyer, but walks and runs well, with a pelvic girdle adapted to terrestrial foraging. Its wings and wing muscles are reduced; it prefers to freeze in place when pursued. Energetic foraging behavior includes a fly-snapping sprint through Neoscatella sexnotata brine fly swarms. With necks outstretched, and bills close to ...
Anatidae: Eurasian teal (Anas crecca), gadwall (Anas strepera), northern pintail (Anas acuta), mallard (Anas platyrhynchos), greater scaup (Aythya marila), long-tailed duck (Clangula hyemalis), northern shoveler (Anas clypeata), garganey (Anas querquedula), Eurasian wigeon (Anas penelope), ferruginous duck (Aythya nyroca), common goldeneye ...
Hundreds of kilometres from any other duck and without a mate, he was known as "the world's loneliest duck", [4] although accompanied by a rooster, a chicken and a weka. [ 2 ] Trevor was named after Trevor Mallard , Speaker of the New Zealand House of Representatives . [ 10 ]