Boys are circumcised in age groups of three years, counting for example all boys between 9 and 12 years old. This marks the end of their youth, and they are initiated. The blacksmith performs the circumcision. Afterwards, the boys stay for a few days in a hut separated from the rest of the village people, until the wounds have healed. The circumcision is celebrated and the initiated boys go around and receive presents. They make music on a special instrument that is made of a rod of wood and calabashes that makes the sound of a rattle.