The coppery titi monkey (Plecturocebus cupreus), or red titi monkey, is a species of titi monkey, a type of New World monkey, from South America. They are found in the Amazon of Brazil and Peru, and perhaps northern Bolivia. It was described as Callithrix cupreus in 1823. These monkeys have a lifespan of a little over 20 years. These monkeys eat certain fruits, insects, and plants. They live in monogamous pairs with interesting ways for vocalizing and protecting themselves from predators. Location, habitat and activity Coppery titis typically inhabit lowland tropical and sub-tropical forests in areas that flood seasonally. They can also be found in forest understory habitats, young forests, swamp edges, and bamboo thickets. Their populations are mainly found west of the Rio Madeira in Brazil, around the Rio Huallaga in Peru, within the upper Rio Madre de Dios basin in Peru and Bolivia, near the northern Rio-Maranon-Amazonas area, around the Eastern Cordillera in Peru and Ecuador, between the Rios Guamues and the Putumayo, and along the eastern base of the Sierra de la Macarena between the Guyabero and Upia rivers. Diet The diet of coppery titis is composed of fruit and insects. They spend nearly 75% of their time feeding eating fruit. The other 25% is spent eating bamboo, leaves, and some insects. The three most consumed fruits are Ficus, Brosimum rubecens, and various berries. Eating time is generally during the early morning and afternoon, while addition feeding on leaves happens before sleeping. Coppery titis rarely eat with other primates, but will eat before or after another primate in the same tree. Family groups will often and habitually eat from the same food source together, meaning there could be a social aspect to meal times. Females will vary their diet when lactating, eating nearly twice as many insects. This is due to the body's higher demand for protein. Males are not known to vary their diets during the time they spend as the primary care-giver. Behavior The behavior of the coppery titis is characterized by a diurnal and entirely arboreal nature, spending all of their day in trees. They live in family groups which consist of an adult pair and up to three generations of off-spring. The adult pairs are monogamous and mate for life. Family members may engage in tail-intertwining before and during sleep. As their tails are not prehensile they cannot be used as an additional