The wigeon is a medium-sized duck with a round head and small bill. The head and neck of the male are chestnut, with a yellow forehead, pink breast and grey body. In flight birds show white bellies and males have a large white wing patch. Birds breed in central and northern Scotland and also in northern England. Many birds visit the UK in winter from Iceland, Scandinavia and Russia. With large numbers of wintering birds at a few UK sites it is an Amber List species. The wigeons are dabbling ducks in the genus Anas. There are three extant species: the Eurasian Wigeon (Anas penelope), the American Wigeon (A. americana) and the Chiloé Wigeon (A. sibilatrix). A fourth species, the Amsterdam Island Duck (Anas marecula), is believed to have become extinct around 1800.