There are three extant species: the Eurasian Wigeon, the American Wigeon and the Chilo? Wigeon. All three are similarly shaped, with a steep forehead and bulbous rear to the head. Males have a distinctive breeding plumage, in their eclipse plumage they resemble females, which are similar in appearance year-round. The three species' closest relatives within the genus Anas are the Gadwall and the Falcated Duck.