Lagopus term is of feminine gender, and the specific epithet has to agree with that, the feminine "muta" and "leucura" are correct. The English name "ptarmigan" comes from the Scottish Gaelic name for the bird, , whose origin is unknown. The p- was added due to a mistaken belief in a Greek origin, as if the word were related to the Greek word ("pterón"), 'wing'. The three species are all sedentary specialists of cold regions. Willow ptarmigan is a circumpolar boreal forest species, white-tailed ptarmigan is a North American alpine bird, and rock ptarmigan breeds in both Arctic and mountain habitats
Arctic ground squirrel Arctic ground squirrel The Arctic ground squirrel ("Urocitellus parryii") is a species of ground squirrel native to the Arctic. People in Alaska, particularly around the Aleutians, refer to them as "parka" (pronounced "par'kee") squirrels, most likely because their pelt is good for the ruff on parkas and for clothing. Subspecies listed alphabetically. The Arctic ground squirrel has a beige and tan coat with a white-spotted back. This squirrel has a short face, small ears, a dark tail and white markings around its eyes. Arctic ground squirrels undergo a coat change from summer to winter. Summer coats include red/yellow colorations along