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.
In eastern North America, the return of the cheerful Magnolia Warbler is a highlight of spring migration. It depends on dense stands of conifers (specially spruces) in the breeding season. Audubon's climate model projects a dramatic 91 percent loss of current summer range by 2080. While shift northward is projected, Arctic tundra probably won’t turn into spruce forest quickly, which could create a problem for the Magnolia Warbler. Most Magnolia Warblers winter in the Neotropics, where they inhabit a wide range of elevations and habitats.