Foraging and dietary patters of C. olivaceus are related to the group size and also to the season in which the animals are observed. It is believed that perceived predation risk plays a significant role in the pattern of food intake. Predation may also influence individual fitness, not only directly, but by its impact on foraging success (Miller and Teaford, 2000).
Weeping capuchins consume fruits, palm nuts, seeds, berries, and many varieties of small vertebrates and invertebrates. A strict hierarchy determines the priority of access to food of the younger capuchins (Eisenberg and Redford, 1989). Other foods may include flowering buds, shoots, barks, gums, arachnids, eggs, and even other small mammals. Some coastal species may also include oysters, crabs, and other marine life (Nowak, 1999).
Animal Foods: mammals; insects; terrestrial non-insect arthropods; mollusks; aquatic crustaceans
Plant Foods: leaves; wood, bark, or stems; seeds, grains, and nuts; fruit
Primary Diet: omnivore