The crown, rear ear coverts and hindneck are black, and the throat and sides of the head below the eyes are white. Females are mottled brown and have blue bills with dark spots or mottling; Ring-necked Duck. Breeding males have a blue bill and chestnut bodies. Look for the distinctive patch of white, black, and russet on the upper wing. In fact, they are part of a group called “stiff-tailed ducks.” The ruddy’s bright blue bill fades once the breeding season is over and the females have been thoroughly impressed. Beneath the water-proof coat are fluffy and soft feathers which keep the duck warm. The bill has a black tip and pale... Read more > Tufted Duck (Aythya fuligula) The adult male Tufted Duck is all black with white sides and a blue gray bill, and a tuft on the head. The female’s body is a plain brown with a grey-brown bill. 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). The eye is bright yellow. By comparison females are quite plain they are dark grey all over. The upper tail is black and the chin and throat are speckled black. It is also known as Blue Bill, Stiff Tail, Spinetail and Little Musk Duck. It has chocolate-brown upperparts, rufous flanks. Male has bright white eyes; female has brown eyes. Bluebill Drake Duck Decoy. Gadwall (“Gray Duck”) This midsize duck is brown-gray with a white belly and dark gray bill. Lesser Scaup Twins. Males have a rich deep chestnut plumage overall except the dark head and upper neck and an orange-brown to white area at the centre of the belly. BL ((Oxyura jamaicensisOxyura jamaicensis)) 23 in WS23 in. Ranges do not overlap. The female has a brown bill with darker plumage than the male and each feather is barred with narrow bands of light brown. However, know that there are many types of ducks, and BirdEden categorizes them accompanied by their identification features and pictures to help you understand them well. Ruddy Duck – Ruddies have bright blue bills, and oddly stiff tails. Description. Breeding males have a blue bill and chestnut bodies. It is usually broad and flat and has rows of fine notches along the edge called ‘lamellae’. King Eider – This species is a The White-eyed Duck is the only diving duck in Australia. They don't fly much but when they do, this tail can be used to recognise them in the air. Blue-billed Ducks have a short spiny tail. The male has a chestnut-coloured ring around its black neck that is barely visible when identifying birds from a distance; It has a black back, a white triangle in front of the folded wing, an angular head, white bars on the bill and uniformly dark wings The Lesser Scaup is a small North American diving duck that migrates south as far as Central America in winter.