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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.
It has a light blue bill with a small black nail on the tip, yellow eyes, and is 20% heavier and 10% longer than the closely related lesser scaup. [16] The male has a dark head with a green to purple sheen, a black breast, a light back, a black tail, and a white underside. The drake or male is larger and has a more rounded head than the female.
Download as PDF; Printable version; ... African black duck; African black swift; African blue flycatcher; ... Black-headed duck; Black-headed gonolek;
The gnatcatchers are mainly a soft bluish gray in color and have the long sharp bill typical of an insectivore. Many species have distinctive black head patterns (especially males) and long, regularly cocked black-and-white tails. One species has been recorded in South Carolina. Blue-gray gnatcatcher, Polioptila caerulea
Black-bellied whistling-duck Blue-winged teal Ruddy 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, flattened bills, and feathers that are excellent at shedding water due to an oily coating.
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.
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Download as PDF; Printable version; ... with short, thick, blue and red bills. All have plumage which is mainly crimson and black or dark grey. ... Red-headed bluebill: