The haka (plural is the same as singular: haka) is a traditional ancestral war cry, dance, or challenge from the Māori people of New Zealand. It is a posture dance performed by a group, with vigorous movements and stamping of the feet with rhythmically shouted accompaniment.aka being performed at the SCC Rugby Sevens. Although the use of haka by the All Blacks rugby union team and the New Zealand rugby league team has made one type of haka familiar, it has led to misconceptions.