Rarely descending to the ground, titi monkeys traverse the canopy with a distinctive gait, skilfully climbing through the branches on all four limbs. While resting, titi monkeys hunch the body, hanging the tail vertically over a branch. From this position they can use the powerful rear limbs to jump spectacular distances, grasping onto branches with leading forehands. Titi monkeys forage during the day for fruits, leaves and insects, resting during midday, and sleep on carefully selected trees that offer safety from predators at night (3). The male leads the group whilst foraging, communicating to the rest of the group with a wide array of vocalisations and visual signals (3).
Titi monkeys are monogamous, with groups consisting of strongly-bonded parents and their offspring. Partners often reinforce the pair bond by perching side-by-side and entwining tails. Females give birth annually during the wet season to just one infant, after a gestation period of five to six months (7). Juveniles grow rapidly to reach adult size within ten months (3).