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 song of the Varied Thrush—simple and metallic—is one of the characteristic sounds of western North America’s wet forests. Most dispersal through the year is north and south, but every year a few wander far to the east. Audubon's climate model forecasts an 82 percent loss of current summer range by 2080. But those predictions are tempered somewhat by the model’s “over-prediction” of current climate space well to the east of the Varied Thrush’s actual range. Given the species’ proclivity to wander, limited range expansion east across north-central Canada seems possible.
Are the projected range maps different from the range maps in field guides? Find the answer here.