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Northern night monkeys—also known as northern owl monkeys, three-striped night monkeys, or douroucoulis—are found north of the Amazon River, primarily between southern Venezuela and north-central Brazil.
Spix’s night monkeys range an average of 2,720 feet (829 m) per night during the wet season and 827 feet (252 m) per night during the dry season. This discrepancy is likely explained by resource availability: during the dry season, when resources are more scarce, night monkeys rest more to conserve energy, and thus require fewer resources.
Night monkeys, also known as owl monkeys or douroucoulis [2] (/ d uː r uː ˈ k uː l i z /), are nocturnal New World monkeys of the genus Aotus, the only member of the family Aotidae (/ eɪ ˈ ɒ t ɪ d iː /). The genus comprises eleven species which are found across Panama and much of South America in primary and secondary forests, tropical ...
Nov 18, 2022 · Ten night monkeys (Aotus lemurinus, five males and five females, age = 23.8 ± 6.8 y.o, body weight = 1.08 ± 0.08 kg) were used in this study. All animals were provided by the Center for the Evolutionary Origins of Human Behavior (former Primate Research Institute), Kyoto University (Inuyama, Japan).
Night monkeys (Aotus), also known as owl monkeys, are New World primates found across Central and South America, ranging from Panama to northern Argentina. Belonging to the family Aotidae, they are characterized by their nocturnal lifestyle and distinctive owl-like appearance.
Azara’s night monkeys, also called Azara’s owl monkeys and southern night monkeys, are endemic to the Gran Chaco region of South America—a large area including many diverse ecosystems, from grasslands to savannas to xeric thorn forests and gallery forests.
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The Aotidae family, commonly known as night monkeys or owl monkeys, holds a special place in the primate world as the only truly nocturnal New World monkeys. For a broader look at different types of monkeys, explore our monkey guide.
