The diet consists almost exclusively of fruit that has fallen to the ground. Population density is 7.7-28.0 per sq km. Groups consist of an adult female and her young of one or two years. Such a group occupies a home range averaging about 13-14 ha. The young are usually found separately from the female, except during brief periods of suckling.
Females are sedentary, and once a home range is established, they remain in an area all their life.
Males are solitary and have home ranges of 20-30 ha., which overlap the ranges of two females. There seems to be a continuous replacement of males in any given area, none having been found in the same range for more than a year. There is no evident territoriality, but individuals are well spaced and seldom in contact. The young reach maturity at 9-26 months, at which time they leave the home range of their mother. Some individuals live to an age of 11-13 years, which is considered old age.