* Japanese name: Raicho * Scientific name: Lagopus mutus * Description: Ptarmigan are medium-size, plump birds about 35 cm long with a 54-60 cm wingspan. They weigh around 500 grams. Since the ...

Ptarmigan in Colorado have varied reproduction, not likely linked to warming trends Date: July 15, 2016 Source: Colorado State University Summary: Ptarmigan, which live in cold ecosystems, are not ...

Above eleven thousand feet in a Colorado winter, the only bird you’re likely to see – if you see it at all – is the White-tailed Ptarmigan.

As a seasonally camouflaged species, the rock ptarmigan has brown plumage in the summer and white plumage in the winter to blend in with its surroundings. Fast Facts Common name: Rock ptarmigan ...