A near threatened species. Adults are white-plumaged, with some greyer areas on the wings. The bald head, the neck and legs are black. The thick down curved bill is dusky yellow. In breeding plumage some slaty grey on scapulars and in wings and ornamental plumes at base of the neck. Sexes are similar, but juveniles have whiter necks and a black bill. It feeds on various fish, frogs and other water creatures, as well as on insects. It walks about actively on marshy land probing with its bill into soft mud and often feeds in shallow water with its head momentarily submerged.
It occurs in marshy wetlands inland and on the coast.
Seen at the Nalsarovar Bird Sanctuary. Description and Habitat from Wikipedia.