Bamana forms of art include the "n’tomo" mask and the Tyi Warra. The "n’tomo" mask was used by dancers at male initiation ceremonies. The Tyi Warra (or "ciwara") headdress was used at harvest time by young men chosen from the farmers association. Other Bamana statues include fertility statues, meant to be kept with the wife at all times to ensure fertility, and statues created for vocational groups such as hunters and farmers, often used as offering places by other groups after prosperous farming seasons or successful hunting parties.