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.
Believe it or not, John James Audubon saw only a handful of these delightful creatures in his lifetime. The reason is that Chestnut-sided Warblers depend on regenerating second-growth for breeding, and most of the continent’s forests were still intact during his travels across North America. Today this species is abundant. Audubon’s climate model projects a rapidly changing future for this species in summer, with only 12% of the current core range remaining stable by 2080 and a rapidly shifting climate space northward and westward. This species will need to use all its skills of adaptation to maintain its current populations for the future.