Brahminy Duck:

Scientific name : Tadorna ferruginea
They have a whitish-buff head and orange-brown plumage.The white wing-coverts, green speculum and blackish flight feathers are distinctive in flight.The female and young ones have a whiter head and lack the ring around the neck.
Food: grain, shoots, insects and molluscs.
Voice: loud goose-like honking both in flight and on land.
Range: breeds in Ladakh and visits warmer south in winter.Less common in extreme south.
Habitat: rivers with sandbars, large and open jheels.

Pintail

Scientific name : Anas acuta
These are slender ducks with pointed tail. The male is greyish above, has a choco-brown head and upper neck with thin white stripe up neckside, while the female is mottled buff-brown with shorter tails as compared to the male.
Food: shoots, seeds of aquatic plants, rice, water insects and molluscs.
Range: winter visitor all over India.
Habitat: vegetation covered jheels and lagoons.

Common teal:

Scientific name : Anas creca
The male is greyish with chestnut head with broad metal green band from eye to nape with yellow white border. The wing speculum is black green and buff while the female is mottled in dark and light brown with belly being pale and wing speculum being black and green.
Food: tender shoots and grains and mostly vegetarian.
Voice: krit...krit and wheezy quack.
Range: all India in winter.
Habitat: jheels, marshes and village ponds.

Cotton teal

Scientific name : Nettapus coromandeliannus
The male has white head and neck with blackish, green-glossed crown, back and neck-collar. It is white below. The female is dull brown above and the white wing-bar is indistinct. Dark stripe through eyes and the white below is mottled brown.
Food: shoots of aquatic plants, grain, insects and crustacea.
Voice: cackling call in flight.
Range: All over India and absent over the arid north west regions.
Habitat: ponds and tanks covered with reeds and vegetation.

Lesser whistling teal