consume more than 100 different species of plants and fruit. Titi monkeys will also eat small insects (ants, moths, butterflies, and their cocoons), spiders, and can catch flying prey if it comes close to them. During the dry season there is an increased feeding time on leaves, and during lactation it is thought insect consumption increases to augment the protein content of the diet. The titi monkey may travel between during the day, and can maintain a home range of . During the dry season there is less fruit available and therefore less need to travel large distances, so the day range may only be a third of the usual distance. Its home range is often shared with other primate species including marmosets, squirrel monkeys, capuchins, owl monkeys, howler monkeys, and spider monkeys. It is sometimes chased from feeding sites by larger species, and will generally try to avoid other primates. Habitat and distribution The white-eared titi is found in tropical humid forests, preferring drier regions to more humid ones. It is found in riparian zones and gallery forests and is clearly associated with open habitats like grasslands and swampy grasslands. It is found in areas with dense vegetation, often choosing to inhabit the thickest parts of the forest. The species seems to be quite tolerant of habitat disturbance. In Bolivia, the white-eared titi is found in the upper parts of the Mamoré, Grande, and San Miguel river basins, east of the Manique River in Beni and in the forests surrounding the city of Santa Cruz de la Sierra. Its range extends north to southern Rondônia in Brazil. Conservation status The white-eared titi is considered to be of least concern on the International Union for Conservation of Nature (IUCN) Red List. The species is not considered threatened due to its adaptability and abundance over a relatively wide range, and despite having a decreasing population trend the decline is not rapid enough to be placed in a threatened category. The species is also listed on CITES Appendix II. The white-eared titi's main threat is deforestation and habitat loss due to agriculture. The area of greatest habitat loss is around the city of Santa Cruz de la Sierra, but it still survives within the city limits and on the edges of many rural establishments. It has few natural predators and is proven to be adaptable to habitat disturbance. Farmland may surround and