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.
This bluebird is just as “western” as the Western Bluebird, but the two species occupy different habitats in summer. The Western is more of a forest bird, the Mountain more partial to open habitats: high sagebrush desert, mountain meadows, and even alpine tundra. Potentially severe loss of current summer range by 2080, as projected by Audubon's climate model, may be most acute at high elevations, where meadows and tundra are widely expected to suffer from climate change. Conversely, suitable climate space is forecast to potentially expand in winter, a result consistent with the Mountain Bluebird’s habitat preferences at that time of year.