Carved out of ivory or wood in a variety of shapes, Chokwe whistles often bear miniature, stylized renderings of masks. Cikunza, the "patron saint" of the boys' initiation into manhood, is depicted with a pointed extension imitating the horn of a road antelope, symbolizing the fertility spirit. Typically such whistles were used by men during the hunt to communicate with their co-hunters and to call their dogs. They were either worn attached to a string as a necklace or tied to a spear.