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 certain swamps of the southeastern U.S., it’s possible to find flocks of hundreds and even thousands of Rusty Blackbirds gathering to roost on a winter’s evening. But this used to be a more widespread phenomenon in the region. The numbers of this bog-nesting species have been declining precipitously over the last couple decades. Audubon’s climate model predicts adding another challenge to the ones this species already faces—a shifting climate space, especially in the summer. A significant northward shift in climate suitable area is forecast, and if the bird and its required boreal bog habitats can follow that space remains to be seen.