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The yellow-billed duck (Anas undulata) is a 51–58 cm long dabbling duck which is an abundant resident breeder in southern and eastern Africa. This duck is not migratory , but wanders in the dry season to find suitable waters.
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 feathers that are excellent at shedding water due to special oils. Thirty-nine species have been recorded in Nevada.
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. A. u. ruppelli Blyth 1855 (northern yellow-billed duck) A. u. undulata Dubois 1839 (southern yellow-billed duck)
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Yellow-billed pintail (Anas georgica), found from southern Colombia to South Georgia; South Georgia pintail (Anas georgica georgica), the nominate race of the yellow-billed pintail; Eaton's pintail (Anas eatoni), from the islands of Kerguelen and Crozet
The yellow-billed pintail has a brown head and neck. The bill is yellow with a black tip and a black stripe down the middle. [8] The tail is brownish and pointed. The upper wing is grayish-brown, and the secondaries are blackish-green. The rest of the body is buffish brown with varying-sized black spots.
The duck has long been recognised as a distinct taxon, with its affinities previously considered to be with the teals. Robert Cushman Murphy was the first to demonstrate that it is a pintail, its closest relatives the yellow-billed pintails of South America (now split as the Chilean pintail A. g. spinicauda and the extinct Niceforo's pintail A. g. niceforoi), [5] though he retained it as a ...
Fulvous whistling-duck Yellow-billed duck. Order: Anseriformes Family: Anatidae 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, flattened bills, and feathers that are excellent at shedding water due to an oily coating.