Kalulis wear an elaborate traditional costume during festivities. The most impressive element is the headpiece, with its huge fan of white feathers from cockatoos hunted by their ancestors. Tied around the men’s ankles are straps containing seeds, which rattle with every step. The pace is set by the beating of the famous Kundu drums with heads made from the leathery skins of giant lizards. The dancers repeatedly rub their hands over the skin to warm the leather, which improves the sound of the drum.