Thunderbirds are birds, galliformes and grouse. Also known as "Snow Chicken", Latin name Lagopusmutus. Mainly distributed in the permafrost zone of Arctic tundra and above the tree line of mountains, only found in Altai Mountain area in northwest Xinjiang, China. Thunderbird is a small and medium-sized bird with a body length of 36 ~ 40 cm. In summer, the upper body is dark brown, with yellow-brown stripes at intervals and white narrow edges at the ends of feathers. The throat and chest are sandy yellow with dark brown transverse spots. The lower body is white, the tail is dark brown, and the top has a narrow white edge. The feet and toes are covered with white. In winter, both male and female birds are white, but their tails are black. There is a wide black eye socket from the corner of the mouth to the back of the eye.