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 widely distributed Willow Flycatcher favors willows, not surprisingly, but also a broad array of other environments—basically anywhere with extensive shrubby growth that isn’t too dry. Audubon's climate model forecasts an 84 percent loss of current summer range by 2080, with a major northward movement of the range. Some of the more widespread and northern populations may adapt to newly available climate space, but others will not. Of particular concern is the “Southwestern” Willow Flycatcher, already endangered, and currently distributed east to New Mexico, and west to southern California.