Generally uncommon and fairly local small diving duck. Frequents lakes, reservoirs, and rivers. Small, rather shy diving duck found as singles or small groups; frequently kept in European waterfowl collections. Both sexes have bushy crest. Striking male mostly white with black face mask and fine black lines on sides of breast and flanks. Female has dark rusty brown head with big white throat and cheek patch. In flight appears strikingly black-and-white.