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.
An expert in the art of camouflage, the American Bittern is famous for its odd, “pumping” song and for pointing its bill toward the heavens and freezing in place to avoid predators. This tactic works well in a reed bed, but not so much when in the open. The species’ migratory nature may allow it to adapt to changing climate. Only 16 percent of its summer range is predicted to remain unaffected by climate change. Its winter range is only slightly less affected. Audubon's climate model predicts major shifts in both the summer and winter areas of suitable climate, but the total amount of area available in both seasons doesn’t change very much.