The ringed teal (Callonetta leucophrys) has a black band extending down to the base of the neck and then partially around it, forming an incomplete ring. It is a small duck of South American forests. Females have an olive-brownish back with the head blotched and striated in white, with pencilled barring on a pale chest and belly. Both have a dark tail, a contrasting pale rump, and a distinctive white patch on the wing. Ringed teals also have webbed toes with long, pointed claws that specialise in allowing the birds to sit on tree branches. These specialised toes are unique, as most waterfowl cannot easily remain perched on tree branches.