sentences:  Thunderbirds, mythological creatures responsible for lightning and thunder, are central to stories told by Algonquian-speaking and Siouan-speaking tribes.Many Plains Indians such as Plains Cree, Plains Ojibwa, Gros Ventre, Crow, Mandan, and Hidatsa used thunderbirds in their art.The design appears on prehistoric artifacts such as shell and bone pendants and pottery, as well as on rock art.