They live in large groups of 40 to 120 individuals, which often divide into smaller subgroups of 6 to 23 individuals, sometimes coming together. Rarely are single individuals found, generally males.
In a large group, the position of females is more visible, and the relationship between females is much closer (mutual grooming, sharing food) than between ales. Males generally maintain close contact with their mothers throughout their lives and, unlike females, permanently remain in their birth group. The position of males in the herd may depend on the rank of their mother.
