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The black-headed duck is the most basal living member of its subfamily, and it lacks the stiff tail and swollen bill of its relatives. Overall much resembling a fairly typical diving duck, [5] its plumage and other peculiarities indicate it may not be a very close relative of the other stiff-tailed ducks, but rather the product of convergent evolution from the ancestors of the stiff-tailed ducks.
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 .
Genus Heteronetta - black-headed duck; Genus Histrionicus - harlequin duck (includes Ocyplonessa) Genus Hymenolaimus - blue duck; Genus Lophodytes - hooded merganser; Genus Lophonetta - crested duck; Genus Malacorhynchus - pink-eared ducks (Tadorninae, Oxyurinae or Dendrocheninae?) Genus Mareca - wigeons and gadwalls; Genus Marmaronetta ...
Nomonyx, masked duck; Heteronetta, black-headed duck; Unresolved: The largest degree of uncertainty concerns whether a number of genera are closer to the shelducks or to the dabbling ducks. The rare white-winged duck, a species of unclear affiliation Wood duck Aix sponsa See also the monotypic subfamilies above, and the "perching ducks"
†Anas pachyscelus Wetmore 1960 (Bermuda Islands flightless duck) Anas sparsa Eyton 1838 (African black duck) LC. A. s. leucostigma Rüppell 1845 (pink-billed black duck) A. s. sparsa Eyton 1838 (South African black duck) Anas melleri Sclater 1865 (Meller's duck) EN C2a(ii) Anas undulata Dubois 1839 (yellow-billed duck) LC
The greater roadrunner is the state bird of New Mexico. This list of birds of New Mexico are the species documented in the U.S. state of New Mexico and accepted by the New Mexico Bird Records Committee (NMBRC). As of August 2022, 552 species were included in the official list. Of them, 176 are on the review list (see below), five species have been introduced to North America, and three have ...
The Pacific black duck is mainly vegetarian, feeding on seeds of aquatic plants. This diet is supplemented with small crustaceans, molluscs and aquatic insects. Food is obtained by 'dabbling', where the bird plunges its head and neck underwater and upends, raising its rear end vertically out of the water.
The white-faced whistling duck has a long grey bill, a long head, and longish legs. It has a black neck and head, and a distinctive white face that gives it its name, though the amount of white color visible has regional variations among the species.