Location in Oregon
Blue is Winter range - Red is Summer range
Purple is Year-round range - Yellow is Migration range

American Wigeon

Anas americana - A common duck, feeding largely on aquatic vegetation, occasionally coming ashore to eat shoots of grains and grasses. Recognized by large white patch on the forewing, most distinct in male. Except in the breeding season, wigeons congregate in large flocks. Unlike most ducks they fly in tight flocks and not in long open V's. The male also shows a white crown and flanks and dark tail coverts. Call is of 2 or 3 short whistles, the last one lower pitched.