Humboldt's Night Monkey

Kingdom Order Family Genus Species
Animalia Primates Aotidae Aotus Aotus trivirgatus
Humboldt's Night Monkey
IUCN Status: Least-Concern
  • Common Names: Humboldt’s Night Monkey, Northern Owl Monkey, and Northern Night Monkey
  • Taxonomy Classification Year: 1812
  • Monkey Size: 24 to 47 cm (9.45 to 18.5 in)
  • Skin Color(s): Black
  • Habitat: Forest, rainforest
  • Diet: Omnivorous
  • Native Countries: Venezuela, Brazil

Humboldt’s Night Monkey Distribution

Humboldt’s Night Monkey Characteristics

Humboldt's Night Monkey

The three-striped night monkey[1] (Aotus trivirgatus), also known as the northern owl monkey, Humboldt’s Night Monkey, or northern night monkey, is one of several currently recognized species of owl monkeys.

Northern Night Monkey

  • Male and female species are similar in size, with a body length of 24-47 cm. However, the length of the tail varies from 22 to 42 cm.
  • Coat colors range from gray, grizzled brown, reddish, and whitish to the orange underbelly.
  • Coat color varies from one geographic location to another. For this reason, in part, the three-striped night monkey is often classified by different researchers into many different species or subspecies.
  • Humboldt’s night monkeys also have large orange/brown eyes. Distinctive facial features include a triangular black patch between the eyes and black stripes down the sides framing his white face.

Humboldt’s Night Monkey Facts

Northern Owl Monkey

  • Three-striped night monkey is the only nocturnal primate in the Neotropics.
  • These primates have the largest olfactory bulbs and accessory olfactory bulbs of any New World monkey, possibly due to their dependence on scents during nocturnal activities.
  • The three-striped night monkey forms pair bonds that are only broken with the death of one of the members.
  • These New-World Monkeys live in family groups, with the immature young staying with their parents until they reach sexual maturity at three or four years old.
  • They are territorial animals with a home range of about 9 hectares. They defend these territories, and aggression ensues when neighboring groups meet at the borders of the territories.

Suggested Reading: All Monkey Species

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BioExplorer.net. (2022, December 06). Humboldt’s Night Monkey. Bio Explorer. https://www.bioexplorer.net/animals/mammals/monkeys/humboldts-night-monkey/.
BioExplorer.net. "Humboldt’s Night Monkey" Bio Explorer, 06 December 2022, https://www.bioexplorer.net/animals/mammals/monkeys/humboldts-night-monkey/.
BioExplorer.net. "Humboldt’s Night Monkey" Bio Explorer, December 06 2022. https://www.bioexplorer.net/animals/mammals/monkeys/humboldts-night-monkey/.
Key References
  • [1]“ADW: Aotus trivirgatus: INFORMATION”. Accessed September 24, 2022. Link.

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