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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 species' common name comes from the sky-blue wing coverts. Crested duck and bronze-winged duck: Iridescent purple-bronze, edged white. [3] Pacific black duck: Iridescent green, edged light buff. [3] Mallard: Iridescent purple-blue with white edges. [1] American black duck: Iridescent violet bordered in black and may have a thin white ...
Black-bellied whistling-duck Canada goose Wood duck Falcated duck Ring-necked duck. Order: Anseriformes Family: Anatidae. The family Anatidae includes the ducks and most duck-like waterfowl, such as geese and swans. These birds are adapted to an aquatic existence with webbed feet, bills which are flattened to a greater or lesser extent, and ...
Male torrent ducks have a striking black and white head and neck pattern and a red bill. In-flight, they show dark wings with green speculum. Females of all subspecies are smaller than the drakes; they have orange underparts and throat, with the head and upperparts grey and a yellower bill. Juveniles are pale grey above and whitish below.
A black-bellied whistling duck in the water. The black-bellied whistling duck is a mid-sized waterfowl species. Length ranges from 47 to 56 cm (19 to 22 in), body mass from 652 to 1,020 g (1.437 to 2.249 lb), and wingspan ranges from 76 to 94 cm (30 to 37 in).
The Cayuga is a medium to heavy duck; standard weights are 3.6 kg (8 lb) for adult drakes and 3.2 kg (7 lb) for ducks. [11]: 440 [12]: 412 The plumage is black with iridescent beetle-green lights; particularly in ducks, some feathers may fade or whiten as the bird ages, which can be a disqualifying fault for showing.
Averaging 35.5 cm (14.0 in) and 370 g (13 oz), it rivals the green-winged teal as the smallest American duck. The bufflehead has a wingspan of 21.6 in (55 cm). [7] Adult males are striking black and white, with iridescent green and purple heads and a large white patch behind the eye.
The upper wing coverlets are white, while its speculum is an iridescent green. The female has a large white eye ring, black crest, and white face, chin, throat, neck, and upper wing coverts. It also has a dark brown body with white striations. [13] [14] Both sexes have a green tuft of feathers protruding from their head. [14]