PROTECTION STATUS: Not listed
PETITIONED: 2010
RANGE: High mountains across the North American West, from Alaska to isolated peaks in northern New Mexico; seriously threatened by climate change in the lower 48 states, especially the Rocky Mountains
THREATS: Global warming, human recreation, livestock grazing, mining, hunting, disease, predation
POPULATION TREND: Population trends for white-tailed ptarmigans vary by region and in some cases are not known; however, population extinctions of the bird have already occurred, and climate change will likely increase their occurrence.