Noisy Night Monkey
Aotus vociferans
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassMammalia (Mamífers)
- OrderPrimates
- FamilyAotidae (Night Monkeys)
- GenusAotus
- SpeciesAotus vociferans (Noisy Night Monkey)
Spix's night monkey (Aotus vociferans), also known as the Colombian gray night monkey, noisy night monkey and Spix's owl monkey, is a night monkey species from South America. It is found in Brazil, Colombia, Ecuador and Peru. 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. Wikipedia →
10–20% of wildlife watchers report a Noisy Night Monkey sighting in Yasuní National Park, based on 27 days of visitor records from GBIF citizen-science data.
Closest Relatives at Yasuní National Park
Common Woolly Monkey
Lagothrix lagothricha
Ecuadorian Squirrel Monkey
Saimiri macrodon
Colombian Red Howler Monkey
Alouatta seniculus
Golden-mantled Tamarin
Leontocebus tripartitus
White-tailed Titi
Plecturocebus discolor
Western Pygmy Marmoset
Cebuella pygmaea
Marañón white-fronted capuchin
Cebus yuracus
Napo Saki
Pithecia napensis
Long-haired Spider Monkey
Ateles belzebuth
Black-mantled Tamarin
Leontocebus nigricollis
Lucifer Titi
Cheracebus lucifer
Miller's Saki
Pithecia milleri
📅 Monthly Probability
☀️ When They're Spotted
Most active during daytime hours (6am–6pm) · across all parks (global)
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there
Parks Where Found
| # | Park | Country | Probability |
|---|---|---|---|
| 1 | Cuyabeno Wildlife Reserve | 🇪🇨 Ecuador | |
| 2 | Yasuní National Park | 🇪🇨 Ecuador | |
| 3 | Anavilhanas National Park | 🇧🇷 Brazil | |
| 4 | Sierra de la Macarena National Park | 🇨🇴 Colombia | |
| 5 | Amacayacu National Natural Park | 🇨🇴 Colombia |
Quick answers
What are the chances of seeing a Noisy Night Monkey in Yasuní National Park?
About 19% of wildlife watchers report a Noisy Night Monkey sighting in Yasuní National Park, based on 27 days of visitor records from GBIF citizen-science data.
When is the best time to see Noisy Night Monkey in Yasuní National Park?
November has the highest sighting rate for Noisy Night Monkey in Yasuní National Park in our monthly data.