The smallest bird in the grouse family, the white-tailed ptarmigan is also one of the few animals that lives on alpine mountaintops throughout its entire life. Every part of this ptarmigan is adapted ...

Rainier white-tailed ptarmigan as a threatened species under the Endangered Species Act. The agency also said it would reconsider protecting the bird’s critical habitat, providing hope that areas ...

Two of the three ptarmigan species, rock and willow, live mainly in the Arctic. The third, white-tailed, also lives as far south as Colorado. (Psst! The “p” in ptarmigan is silent.) ...