Night monkeys are the only truly nocturnal monkeys with the exception of some cathemeral populations of Azara's night monkey, who have irregular bursts of activity during day and night. They have a varied repertoire of vocalisations and live in small family groups of a mated pair and their immature offspring.

Night monkeys have several adaptations that enable their nocturnal lifestyle. They possess large eyes with a high density of rod cells, enhancing their night vision. Their retinas are specialized for low-light conditions, allowing them to navigate and forage in the dark.

2024年3月13日 · Meet the owl monkey, also known as the night monkey, the world’s only nocturnal primate species. What is an owl monkey and where do they live? The owl monkeys are a group of 10 species in the...

Azara’s night monkeys, also known as the southern night monkey or Azara’s owl monkey, inhabit the Gran Chaco region of South America, characterized by dry forests, savannas, and scrublands. Their range extends across several countries, including Argentina, Bolivia, Paraguay, and parts of Brazil, particularly in the…

The Colombian night monkey, also known as the gray-bellied monkey, the gray-necked monkey, the lemurine night monkey, and the lemurine owl monkey, is native to South and Central America. This monkey’s territory ranges from Ecuador and Peru to Guyana and Brazil, and from Panama to northeast Argentina.

The three-striped night monkey (Aotus trivirgatus), recognizable by its distinctive facial markings. Aotidae species are distributed across Central and South America, with certain species living north of the Amazon River, such as gray-necked night monkeys, and others, like red-necked night monkeys, located south of the Amazon. These ...

Night monkeys provide a graphic example of a persistent failure to recognize cryptic species among nocturnal primates, because they differ relatively little in visually obvious characters.

There are eight species of night monkeys, also commonly called douroucoulis or owl monkeys, found from Panama to Peru, Bolivia, and northeastern Argentina. Douroucoulis are the only nocturnal monkeys in the New World.

Night monkeys are nocturnal New World monkeys that are found in forests across Panama and much of South America. Night monkeys have large eyes which improve their vision at night, while their ears are mostly hidden, giving them their name Aotus, meaning "earless".

The Spix's night monkey is a small bodied monkey species usually having a mass of around one kilogram. It belongs to the only nocturnal genus of New World primates Aotus. This type of monkey can leap farther than most due to it having longer arms than legs. The monkey averages 0.5 meters in height.