The darker the color, the more favorable the climate conditions are for survival. The outlined areas represent approximate current range for each season. More on reading these maps.
Audubon's climate model projects a highly variable seasonal future for the American Wigeon. Only 35% of its summer range will remain stable while the remaining suitable climate for nesting will shift dramatically northward, and if the species can follow the rapid change is an open question. The wintering area is predicted to slightly expand and shift northward; this is one of many migratory waterfowl species that will probably begin to winter further north as the mean winter ice line retreats toward the North Pole. An accomplished grazer, this species may actually benefit from ponds fringed by lawns at suburban office campuses.