Presbytis rubicunda
Silhouette: PhyloPic
In 3 days ~60% in a week ~90%
The maroon langur, maroon leaf monkey, or red leaf monkey (Presbytis rubicunda) is a member of the family Cercopithecidae. It is found on the southeast Asian island of Borneo and the nearby smaller Karimata. P. rubicunda mostly live in forests at altitudes below 2,000 m. They feed on leaves, seeds, and fruits.
Maroon leaf monkeys (Presbytis rubicunda) are endemic to the island of Borneo in Southeast Asia. Their habitat is dense dipterocarp evergreen forest. Borneo has a healthy tropical rainforest. It also contains shallow swampy areas made up of acidic, decomposed plant matter. These swampy areas have seasonal bouts of dry weather; during the wet season the rivers rise around two meters. Maroon leaf monkeys are arboreal primates and spend most of their time in the canopy. They have a large home ranges and low population densities compared to other primates. This is believed to be because they rely on specific trees which are rare and widely dispersed.
Maroon leaf monkeys are herbivores. Their main diet is fruits, seeds, young leaves, and flowers. They are selective feeders, as food becomes limited they will feed on certain types... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Danum Valley Conservation Area | 🇲🇾 Malaysia | |
| 2 | Kinabatangan Wildlife Sanctuary | 🇲🇾 Malaysia | |
| 3 | Sepilok | 🇲🇾 Malaysia | |
| 4 | Kinabalu Park | 🇲🇾 Malaysia |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Ralph Perkins II Wildlife Center and Woods Garden | 🇺🇸 United States |
Possible
About 30% of wildlife watchers report a Maroon Leaf Monkey sighting in Sepilok on a given day, based on 40 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 9th most-seen of the 23 mammals we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
October to December
In those months about 40% of wildlife watchers report a Maroon Leaf Monkey in Sepilok on a given day, against under 5% in January–February and May, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Maroon Leaf Monkey sightings with a recorded time, and about half of them come between 6 am and 6 pm: it is most active around dawn and dusk.
3rd of 4
Of the 4 parks where we can rate Maroon Leaf Monkey sightings, Sepilok ranks 3rd at about 30%. The best odds are in Danum Valley Conservation Area (Malaysia, about 80%) and Kinabatangan Wildlife Sanctuary (Malaysia, about 30%). All parks ranked.
Same family: Cercopithecidae
The closest relatives of the Maroon Leaf Monkey that you can see in Sepilok (family Cercopithecidae, Old World Monkeys) are Southern Pig-tailed Macaque (about 40%), Proboscis Monkey (about 40%) and Crab-eating Macaque (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Maroon Leaf Monkey is recorded against all the mammals logged in Sepilok (40 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.
