Song: Flight song very distinctive. A decelerating series of "ko-ko" notes followed by a series of similarly decelerating "ko-way" or "ko-way-o" notes. Given in flight and upon alighting on ground. Single "kwok" call given on ground. Rock Ptarmigan song quite different.
Sound: Ted Miller (Bird Sounds of Canada); 1979 Jun 2; Canada, Manitoba; Churchill; Adult; Primary Sound;