its entire range. Diet The diet of De Brazza's monkeys consists mostly of herbaceous plants found on the forest floor, and fruits when available. These are supplemented with insects, seeds, and other food sources when primary foods are scarce. Predators Predators of the De Brazza's monkey include the crowned eagle, leopard, humans, and common chimpanzees. Though rare, dogs and pythons may also predate on juvenile De Brazza's. The typical predator response is to curl up in a tight ball against the side of a tree with the orange crown and white stripes on the thighs hidden and wait silently for the predator to leave. Individuals will only move if the predator approaches their position, and even then they move quietly and slowly to try and escape notice. Behavior The lifespan of the De Brazza's monkey is thought to correspond similarly to other members of Cercopithecus which live up to 22 years in the wild and 30 years in captivity. Its cryptic nature makes the De Brazza's monkey hard to observe in the wild. Troop sizes are small for a guenon, ranging from 2-10 individuals on average. In some areas of Western Africa, such as Gabon and Cameroon, small pair-bonded groups of a male, female, and infants and juveniles have been observed. In Eastern Africa, the DeBrazza's monkeys live in single male, multi-female groups. Solitary males do not create bachelor groups and will occasionally depose an alpha male to take over access to the females. Male De Brazza's monkey communicates with booming sounds. These are usually heard early in the morning when the male calls out to establish his territory, though he will also use this call to bring the group back together if they get separated. When attacked by predators, males will give an alarm call. In the case of crowned eagles, males will emit a short bark before attacking the eagle to scare it off. Females have also been observed to give alarms calls and growl at humans. Otherwise, female vocalizations are limited to quiet croaks given when feeding or resting. Infants and juveniles will give shrill squeals of distress when separated from their mothers or the group. Given the cryptic nature of this species, hearing their calls is sometimes the only way to know they are present. Unlike other guenons, which often form polyspecific associations to decrease predation and increase foraging, DeBrazza's monkeys will be aggressive towards other