The thunderbird holds major significance for indigenous cultures in North America. Seen as protection against evil spirits and an overall symbol of power and strength, the thunderbird is considered one of the most powerful spirits in many Native American cultures.
The thunderbird is also said to transform into human form by removing its feathers like a cape and its head like a mask, and it wields lightning snakes hidden beneath its wings as a tool or weapon. The namesake of the thunderbird is from its flapping wings, which is said to sound like thunder, and its existence is thought to bring forthrains and storms.