Black-headed Night Monkey

Kingdom Order Family Genus Species
Animalia Primates Aotidae Aotus Aotus nigriceps
IUCN Status: Least-Concern
  • Common Name: Black-headed Night Monkey
  • Taxonomy Classification Year: 1909
  • Monkey Size: 24 to 37 cm (9.4 to 14.5 in)
  • Skin Color(s): Grey-black
  • Habitat: Forest, rainforest
  • Diet: Herbivorous
  • Native Countries: Brazil, Bolivia, Peru

Black-headed Night Monkey Distribution

Black-Headed Night Monkey Characteristics

The black-headed night monkey[1] is a nocturnal monkey species native to South America. The monkeys are small primates about the size of a small squirrel.

  • Their coats are thick and short. The adult Aotus nigriceps has dark gray-black agouti fur on the upper back and front legs and orange-tan fur on the tail, outer hind legs, and lower back.
  • They also have three distinctive black bands that almost converge on the forehead.
  • Two of these bands follow the sides of the face to the upper jaw, with the central band extending to the bridge of the nose.
  • In addition, they have white patches above each eye, under the mouth, and on the cheeks.

Black-Headed Night Monkey Facts

  • The black-headed night monkeys in Peru have mainly inhabited degraded areas. Sometimes, these areas have been disturbed by human activities or natural phenomena in the ecosystem.
  • It is known as nu’nu’ in the Shawi language of Peru and ausisiti in the Kwaza language of Rondônia, Brazil.
  • Although there is little data on the mass of Aotus nigriceps in particular, both male and female, Aotus species weigh an average of 750 g when fully grown, reaching this size by 14 months of age.
  • These primates are serially monogamous; mates can be evicted due to violence by a same-sex intruder.
  • Aotus nigriceps individuals are very territorial and defend their range with sexually specific vocalizations and aggression.

Suggested Reading: Biggest Monkey Species

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BioExplorer.net. (2023, January 30). Black-headed Night Monkey. Bio Explorer. https://www.bioexplorer.net/animals/mammals/monkeys/black-headed-night-monkey/.
BioExplorer.net. "Black-headed Night Monkey" Bio Explorer, 30 January 2023, https://www.bioexplorer.net/animals/mammals/monkeys/black-headed-night-monkey/.
BioExplorer.net. "Black-headed Night Monkey" Bio Explorer, January 30 2023. https://www.bioexplorer.net/animals/mammals/monkeys/black-headed-night-monkey/.
Key References
  • [1]“Species distribution modeling and conservation assessment of the black-headed night monkey (Aotus nigriceps) – A species of Least Concern that faces widespread anthropogenic threats RT: Aotus nigriceps distribution assessment”. Accessed December 11, 2022. Link.

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