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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.
The genus name Aythya is derived from the Ancient Greek aithuia which refers to a seabird mentioned by Aristotle and others and is thought to refer to a seaduck or other seabird. The species name marila is from the Greek word for charcoal embers or coal dust. [9] A. m. nearctica female, Ontario. Two subspecies of Greater scaup are currently ...
Except for hybrids between the two scaup species, the most reliable mark is the black bill-tip of hybrids, whereas in the scaups only the very point ("nail") of the bill is black. This is even recognizable at considerable range, as the scaups' bills appear uniformly grey from a distance, whereas those of hybrids look two-colored.
The bluebills are the genus Spermophaga of the estrildid finches family. These birds are found in tropical Africa.They are gregarious seed eaters with short, thick, blue and red bills.
The blue-billed teal, spotted teal or Hottentot teal (Spatula hottentota) is a species of dabbling duck of the genus Spatula. It is migratory resident in eastern and southern Africa , from Sudan and Ethiopia west to Niger and Nigeria and south to South Africa and Namibia .
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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 platyrhyncos, while a small minority are descendants of the Muscovy duck, Cairina moschata.