柯林斯詞典ptarmigan /?tɑ?m?ɡ?n/ 1. N any of several arctic and subarctic grouse of the genus Lagopus, esp L. mutus, which has a white winter plumage 松雞屬禽類 返回 ptarmigan劍橋詞典a bird that is a type of grouse , found in mountains and in northern regions . Its feathers typically turn white in winter . 松雞 返回 ptarmigan