One young born. Gestation 162-186 days. No specific breeding season. Females mature at 5 years, males at 8 years. Females usually outnumber males, usually 1 male but can be as many as 3.
Females form stable core, males migrate.
Family Cercopithecidae, subfamily cercopithecinae, genus macaca, silenus-sylvanus subgroup. They forage mainly at the canopy top, but they do search every level of the forest. They also eat seeds, young leaves, stems, flowers, buds. On the ground they eat reeds, grasses, sedges. They even eat fungi by picking them off dead wood and foliage.