Scandinavian Ptarmigan L. m. rupestris Canadian Rock Ptarmigan L. m. helvetica Alpine Ptarmigan L. m. japonica Japanese Ptarmigan L. m. millaisi Scottish Ptarmigan | synonyms = Tetrao mutus Montin, 1781 Lagopus mutus (lapsus, see below) }} The Ptarmigan, Lagopus muta Lagopus,'s derived from Ancient Greek lagos (λαγως), meaning "hare", + pous (πους), "foot", in reference to the bird's feathered legs (see also Snowshoe Hare). The species name, mut… (More on Ptarmigan)