Sandhill Crane This walrus ivory crane is hand carved by Inupiaq artist Charles Kokuluk. Charles is skilled in carving ivory, whalebone, and soapstone.He is known primarily as an ivory carver and concentrates his efforts on carving birds.He does several varieties of geese (etched in black) and is most recognized for his snow goose (blue phase).He also carves several varieties of ducks and loons, some of them in color.