The rock ptarmigan (Lagopus muta) is a medium-sized gamebird in the grouse family. It is known simply as the ptarmigan in the UK and in Canada, where it is the official bird for the territory of Nunavut, Canada, and the official game bird for the province of Newfoundland and Labrador, Canada. It is known as the snow chicken in the United States. In Japan, it is known as the raichō (雷鳥), which means "thunder bird". It is the official bird of Gifu, Nagano, and Toyama Prefectures and is a protected species nationwide.
- Government of Nunavut. "The Rock Ptarmigan (LAGOPUS MUTUS) Official Bird of Nunavut". Retrieved 2010-12-04.
- "The Arms, Seals, and Emblems of Newfoundland and Labrador".