Cacajao – Uakari

The uakari (pronounced “wah-kah-ree”) is a distinctive and striking primate, notable for its bald head and bright red face. This unusual appearance is among the most extraordinary of all monkeys and serves a specific health indicator; a brighter red face is a sign of good health and strong immune function, which is attractive during mating. Uakaris are found in the Amazon rainforests of South America, particularly in Brazil, Peru, and Colombia, thriving in swampy, flooded forests and near waterways.

There are several species of uakari, with the most recognized being the bald uakari. These monkeys have a relatively short tail for a primate, which is unusual given that many of their relatives use long tails for balance in the trees. Instead, uakaris are adapted to a life spent mostly in the treetops but do not require long tails because they typically move by jumping from branch to branch rather than swinging. They have a robust and muscular build, which aids in this dynamic form of locomotion.

Their coat can vary in color, ranging from white or reddish to all black, depending on the species. These monkeys live in large groups that can number over 100 individuals, especially during the dry season when they congregate in areas where food is abundant. They are highly social animals with complex interactions and a structured social hierarchy.

The diet of a uakari is predominantly fruit-based, but these primates are also known to eat seeds, leaves, insects, and small animals. Their strong jaws and specialized teeth allow them to crack open hard-shelled fruits and nuts, an essential ability in their forested environment. This diet is crucial not only for their nutritional needs but also for the ecosystem, as uakaris help in seed dispersal, contributing to the health and regeneration of their rainforest habitat.