Green-winged Teal Duck (male)

This is the smallest North American dabbling duck. The breeding male has grey flanks and back, with a yellow rear end and a white-edged green speculum, obvious in flight or at rest. It has a chestnut head with a green eye patch. The females are light brown, with plumage much like a female Mallard. They can be distinguished from most ducks on size, shape, and the a white-edged green speculum.