Fulvous Whistling Duck

Fulvous Whistling Ducks can't be confused with any other species of whistling duck or any other species of Anatidae. Only the whistling duck can be confused with the juvenile of our species. There is no sexual dimorphism. The overall appearance of the adult is reddish-brown with a darker back. The head is orange, the chin and throat are slightly white with black stripes forming a wide collar, the cap is a darker red and a brown line runs down the neck and widens at the bottom. The chest is orange-beige and the belly tends to darken slightly but still maintain the same tones. The undertail and undertail coverts are lightly tinted beige. The flank feathers are white, like long, pointed flames rising to the upper parts. The tips of the rectrices and the upper parts are brown. Reddish fringes on the tips of the smaller and medium coverts mix with the dark tones of the upper parts. These fringes tend to disappear on the tips of the blackish primary feathers. The rump is also dark. Standing and looking back, a pale white-beige crescent formed by the rectrices appears, in the middle the rump and the tail are black. The underside of the wing is blackish. The bill is blue-gray, the nail is black. The iris is dark brown, the eye has a light blue-gray orbital ring. The long legs are dark gray.
The female is similar to the male but duller. The only more or less visible difference, when the two individuals of the couple are together, is the brown line behind the neck that goes up to the cap in the female but is interrupted on the neck in the male.
The nest-fleeing chick is brown on the body and head. The cheeks are yellowish-white with a horizontal brown line in the middle.The chin and throat are white.