Crow moccasins. The quillwork is called Fort Berthold quillwork, a form of hatch quillwork done in North Dakota. It is unusual to see them on moccasins and this pair is very fine. They would not have been worn during a sun dance but used to slip on the feet when the dancer left the sun dance circle, or stepped out of the ring. The Hidatsa Arikara also made the sun design but the Sioux are the only ones who continued to do this design.