ptarmigan
n. காட்டுக்கோழி வகை, கோடைக்காலத்தில் கறுப்புச் சிறகுகளையும், மழைக்காலத்தில் வெண் சிறகுகளையும் உடைய கோழியினப் பறவை வகை.
Ptar"mi*gan, n. Etym: [Gael. tarmachan; cf. Ir. tarmochan, tarmonach.] (Zoöl.) Defn: 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. Note: They chiefly inhabit the northern countries and high mountains of Europe, Asia, and America. The common European species is Lagopus mutus. The Scotch grouse, red grouse, or moor fowl (L. Scoticus), is reddish brown, and does not turn white in winter. The white, or willow, ptarmigan (L. albus) is found in both Europe and America.