Cercopithecus ascanius
Silhouette: Kai R. Caspar · PhyloPic
In 3 days ~80% in a week >90%
The red-tailed monkey (Cercopithecus ascanius), also known as the black-cheeked white-nosed monkey, red-tailed guenon, redtail monkey, or Schmidt's guenon, is a species of primate in the family Cercopithecidae. It is found in Angola, Central African Republic, Democratic Republic of the Congo, Kenya, Rwanda, South Sudan, Tanzania, Uganda, Zambia, and possibly Burundi. The red-tailed monkey is usually black, red, or orange. Although native to this region, it has spread north and south as well as it can survive in different habitats and under different conditions. It is a distinct creature in its habitats and is gradually becoming endangered due to deforestation and over-exploitation through hunting and predation.
There are five subspecies recognized for this species: Cercopithecus ascanius ascanius Cercopithecus ascanius atrinasus Cercopithecus ascanius katangae Cercopithecus ascanius whitesidei Cercopithecus ascanius schmidti The red-tailed monkey is named as it sounds: for the red coloration of the tail's underside. The reddish color increases from the base of the tail to the tip. These mammals have a white... Wikipedia →
Alarm call0:53
Congo (Democratic Republic) · 2023
© Deville Tanguy · XC1182414 · CC BY-NC-SA 4.0
Recording0:24
Congo - Kinshasa · 2022
© koenbetjes · iNaturalist · CC BY-NC 4.0
Recording0:13
Kenya · 2024
© Japie · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kibale National Park | 🇺🇬 Uganda | |
| 2 | Semuliki National Park | 🇺🇬 Uganda | |
| 3 | Bwindi Impenetrable National Park | 🇺🇬 Uganda | |
| 4 | Queen Elizabeth National Park | 🇺🇬 Uganda | |
| 5 | Masai Mara National Reserve | 🇰🇪 Kenya |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kampala | 🇺🇬 Uganda |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | San Diego Zoo | 🇺🇸 United States | |
| 2 | National Zoological Park | 🇺🇸 United States | |
| 3 | Natural Bridge Wildlife Ranch | 🇺🇸 United States | |
| 4 | Beijing Wildlife Park | 🇨🇳 China | |
| 5 | Brookfield Zoo | 🇺🇸 United States | |
| 6 | Shenzhen Safari Park | 🇨🇳 China | |
| 7 | Johannesburg Zoo | 🇿🇦 South Africa | |
| 8 | Oakland Zoo | 🇺🇸 United States | |
| 9 | The Maryland Zoo | 🇺🇸 United States | |
| 10 | Toledo Zoo | 🇺🇸 United States | |
| 11 | Wildlife World Zoo | 🇺🇸 United States | |
| 12 | Nanning Zoo | 🇨🇳 China | |
| 13 | Guangzhou Zoo | 🇨🇳 China | |
| 14 | Zoo de Lubumbashi | 🇨🇩 Congo - Kinshasa | |
| 15 | ZooTampa | 🇺🇸 United States | |
| 16 | Oregon Zoo | 🇺🇸 United States | |
| 17 | Lisbon Zoo | 🇵🇹 Portugal | |
| 18 | Houston Zoo | 🇺🇸 United States | |
| 19 | Philadelphia Zoo | 🇺🇸 United States | |
| 20 | Zoo Atlanta | 🇺🇸 United States | |
| 21 | Espace zoologique de Saint-Martin-la-Plaine | 🇫🇷 France | |
| 22 | Leningrad Zoo | 🇷🇺 Russia | |
| 23 | Zoopark Limpopo | 🇷🇺 Russia | |
| 24 | Greenville Zoo | 🇺🇸 United States | |
| 25 | Lembang Park & Zoo | 🇮🇩 Indonesia |
Likely
About 40% of wildlife watchers report a Red-tailed Monkey sighting in Bwindi Impenetrable National Park on a given day, based on 32 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 5th most-seen of the 12 mammals we can rate there. Over three days the chance rises to about 80%, and over a week to over 90%, if each day is a fresh chance.
October and November
In those months about 50% of wildlife watchers report a Red-tailed Monkey in Bwindi Impenetrable National Park on a given day, against about 10% in April, the lowest month. Those are among Bwindi Impenetrable National Park's wettest months, with about 300 mm of rain a month against 65 mm in January.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Red-tailed Monkey sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 5
Of the 5 parks where we can rate Red-tailed Monkey sightings, Bwindi Impenetrable National Park ranks 3rd at about 40%. The best odds are in Kibale National Park (Uganda, about 80%) and Semuliki National Park (Uganda, about 70%). All parks ranked.
GBIF citizen-science records
It is estimated from how often the Red-tailed Monkey is recorded against all the mammals logged in Bwindi Impenetrable National Park (32 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
