The white-nosed saki (Chiropotes albinasus) is a species of bearded saki, a type of New World monkey, endemic to the south-central Amazon rainforest in Brazil. Both its scientific and common name were caused by the authors working from dead specimens, where the skin on and around the nose fades to a whitish color. In living individuals, the nose is actually bright pink (though with fine barely visible white hairs). Pelage on the body tends to be black in males and brown to brownish-grey in females. No other species of the genus Chiropotes have a brightly coloured nose. This species is considered to be "medium-sized". They are a primary consumer that eats seeds, fruit, flowers, bark, insects and leaves. They are also a social species that arrange themselves into large groups for many reasons such as sleeping, food gathering and travel arrangements. These social groups are important in situations where they are under attack by a predator as they decide on their anti-predation strategies depending on the number of them available at the time. They are seasonal breeders, only reproducing in specific months during the year. In the 2020 IUCN Red List report, this species was listed as vulnerable with a decreasing population. Distribution and habitat Geographical distribution The distribution of this species depends on their ability to survive and adapt to drastic changes in the environment. They are known to be able to handle difficult environmental changes to the point where they can survive for a long period of time before having to move elsewhere. According to research, they are distributed mostly throughout the south-east and south-central regions of the Amazon Rainforest which extends into the country of Brazil. They are dominant in the southern region of the Amazon since they share the eastern part with the Uta Hicks bearded saki which causes problems with food availability. They have also been observed towards the south-western area of the Dos Marmelos River in Brazil. Habitat preferences As a primary consumer, the white-nosed saki is dependent on habitats with enough food supply. Due to their similarity in diet with other Chiropotes, it is rare to find this species in habitats where they are required to coexist and compete over food supply. They are mainly found in terra firma ecosystems within the Amazon, where their preferred food source of immature seeds is readily available. This species prefers primary terra firma forests which means