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The Indian spot-billed duck was described by the naturalist Johann Reinhold Forster in 1781 under its current binomial name Anas poecilorhyncha. [2] [3] The name of the genus Anas is the Latin word for a duck. The specific epithet poecilorhyncha combines the classical Greek words poikilos meaning "pied" or "spotted" and rhunkhos meaning a "bill ...
The eastern spot-billed duck was described by the English biologist Robert Swinhoe in 1866 under its current binomial name Anas zonorhyncha. [2] [3] The name of the genus Anas is the Latin word for a duck. The specific epithet zonorhyncha is derived from the classical Greek words zōnē meaning "band" or "girdle" and rhunkhos meaning "bill". [4]
This white spike is located near the tip of the upper mandible in most species (e.g., gulls); [179] near the tip of the lower mandible instead in a minority of others, such as northern lapwings; [179] with a few species, such as Eurasian whimbrels, black-winged stilts and semipalmated sandpipers, [179] having one on each mandible. [180]
It has grey upperparts while the underside has broad black barring. The tail is barred with a broad subterminal dark band and a white tip. Young birds have white markings on the crown and white chin and throat contrasting with a dark face. Juveniles are browner and have broad white tips to the head and wing feathers.
The outer secondaries are tipped with white and the inner ones have black margins. The plumage of the two sexes are mostly the same, although the female has slightly less chestnut in the chest. [17] The pinkish-white bill has fleshy flaps of skin hanging from the sides of its tip.
The Hook Bill is a light duck, with an average weight of approximately 2 kg. [6]: 417 Three colour variants are recognised in France, the Netherlands and the United Kingdom: [8] the dusky mallard has a black head and rump with green lustre, the body in shades of grey with no white neck-ring, and a slate-grey beak; the white-bibbed dusky mallard is similarly coloured, but with a distinct white ...
At Chilika Lake, Mangalajodi, Odisha, India. The ruddy shelduck (Tadorna ferruginea) is a member of the shelduck genus Tadorna; in the wildfowl family Anatidae.The bird was first described in 1764 by the German zoologist and botanist Peter Simon Pallas who named it Anas ferruginea, but later it was transferred to the genus Tadorna with the other shelducks.
The crab-plover is related to the waders. It resembles a plover but with very long grey legs and a strong heavy black bill similar to a tern. It has black-and-white plumage, a long neck, partially webbed feet and a bill designed for eating crabs. Crab-plover, Dromas ardeola