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.
The male Mallard is the widely recognized “green-headed” duck and is a common sight in waterside parks. The more somber female, clad mostly in brown, still shares the male’s white tail. By 2080, Audubon's climate model projects a significant shift northward during the summer, with 75 percent loss in current summer range. The winter range appears stable, with a less than 10 percent change from the current range. Despite security during the winter, this popular game bird faces a dramatic and difficult adjustment during the summer, as the species largely departs the lower 48 by the end of the century.