An uncommon and easily overlooked small duck of lakes and wetlands, usually with surrounding reeds. Mainly seen singly or in pairs, sometimes in small groups, and at times sleeping with Lake Ducks. Note the long and low profile in the water and the long gray bill with a pink band at the base on males. Males have a black head, but females are notably drab brownish overall and are best identified by size and shape, and association with a male. Lays its eggs in nests of other birds, such as coots, ducks, and even herons. Ducklings fend for themselves.