Very little is known about these elusive monkeys. Groups of between 2 and 12 individuals have been observed, and these are normally made up of one or two mature males with a number of females and their offspring. Active during the day, these monkeys are particularly arboreal, only rarely alighting on the ground. After a gestation period of around 6 months, females will give birth to a single young; male offspring tend to disperse from their natal group (4). Groups of golden langurs are more active in the morning and evening, resting during the heat of midday. These monkeys feed predominantly on leaves but will also eat fruit and seeds (4). The mating season is in January and February, and a single offspring is born in July or August (8).