it has had little to no human disturbance. These forests are known for their "poor soils", but this is not an issue for this species. In fact, they live within this ecosystem because of their ability to easily organise groups for foraging to find their required food source. Although their habitat preference is mainly dependent on food availability, this species also prefers to live within the shaded comfort of upper canopies which are the main characteristic of this particular habitat. These upper canopies are where they have been observed spending most of their day-to-day lives. This species has also been found living and passing through "mountain savanna forests" due to the high elevation; however, this is not as common. Morphology Physical characteristics The white-nosed saki has three common physical features including a beard, two "tufts of hair" on its head, and a long "bushy" tail. Its physical characteristics make it easy to identify amongst other species of the genus Chiropotes. Their distinct features include an entirely black, "silky" fur body in contrast with their "reddish-pinkish" noses and lips. In fact, their name can be confusing because although they have 'white' hairs on their noses, the skin of their nose is a brighter mix of red and pink which makes it the more visible colour. Although both the male and female have the same physical features, the female can be distinguished to the male through their shorter and thinner hair within their tufts and beards. Two of their most important body parts include their tail and teeth. The function of their tail changes from when they are young. It is initially used for swinging across canopies, but then becomes "non-prehensile" and used only for balance as they become adults. Regarding balance, this species uses their tail to support them during suspensory behaviours, mostly with feeding. Their teeth on the other hand are described as being of a "canine" appearance and these help them break through the tougher foods they eat e.g., fruits and seeds with harder outer shells. Body measurements Various research papers have produced similar data which describe this species to be of a medium size. On average, weight measurements were found to be between a minimum of 2.5 kg and a maximum of 3.1 kg, with the female weighing less across all studies. In one of the earlier studies in 1981, José Márcio Ayres found that the female weighed