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.
Where Pygmy Nuthatches occur, they are impossible to overlook. Despite their tiny stature, they form sizeable flocks that are constantly on the move and always making a fuss. But they are habitat specialists, being restricted to “yellow pine forests” (mainly ponderosa pine and Jeffrey pine) in the West. The spectre of climate change is always of concern for specialized species, and Audubon's climate model indeed forecasts a challenging future for this tiny nuthatch. In both winter and summer, suitable climate space for this species is projected to decline by three quarters as the species is pushed further up the elevational gradient.