Male: white head and neck, speckled black; fleshy knob (comb) on top of beak; black back has purple green gloss; greyish lower back; white lower-neck collar and underbody; short black bars extend on sides of upper breast and flanks. Female: duller, smaller; lacks comb. Small parties, either on water or in trees over water; nests in tree cavities; feeds on surface and in cultivation; can also dive.
jheels and marshes with surrounding tree cover.
shoots and seeds of water plants, grain, aquatic insects, worms, frogs.
almost entire India; mostly resident but moves considerably with onset of monsoons; uncommon in extreme S and NW India.
loud, goose-like honk when breeding.