ptarmigan

Any of various grouse of the genus Lagopus, inhabiting arctic, subarctic, and alpine regions of the Northern Hemisphere and having feathered legs and feet and plumage that is brown or gray in summer and white in winter.

A bird of the family Tetraonidæ and genus Lagopus, having feathered feet.

Any grouse of the genus Lagopus, of which numerous species are known. The feet are completely feathered. Most of the species are brown in summer, but turn white, or nearly white, in winter.

Any of three species of small grouse in the genus Lagopus found in subarctic tundra areas of North America and Eurasia.

large Arctic and subarctic grouse with feathered feet and usually white winter plumage