Trachypithecus cristatus
Silhouette: Andy Wilson · PhyloPic
In 3 days >90%
The silvery lutung (Trachypithecus cristatus), also known as the silvered leaf monkey or the silvery langur, is an Old World monkey. It is arboreal, living in coastal, mangrove, and riverine forests in Sumatra, Borneo, Java, as well as in parts of the southwestern Malay Peninsula, the Natuna Islands, and other nearby islands. It is the type species of its species group.
The silvery lutung is a medium-sized monkey with a long, non-prehensile tail. It has grey-tipped, dark brown or black fur, giving it a uniform silvery appearance. Unlike some related species, there are no paler markings on the face or body, except for a patch of whitish hair on the groin of females. A crest of fur runs along the top of the head, and the hair on the cheeks is long, often obscuring the ears. The hands and feet are hairless, with dark-coloured skin, and have opposable thumbs and toes.
Females range from 46 to 51 centimetres (18 to 20 in) in head-body length, with an average weight of 5.7 kilograms (13 lb) and a tail length of 67 to 75 centimetres (26 to 30 in). Males are slightly larger, from 50 to 58 centimetres (20 to 23 in) in length, with an average weight of 6.6 kilograms (15 lb... Wikipedia →
Recording0:19
Malaysia · 2026
© Dixon Lau · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bako National Park | 🇲🇾 Malaysia | |
| 2 | Kinabatangan Wildlife Sanctuary | 🇲🇾 Malaysia | |
| 3 | Tanjung Puting National Park | 🇮🇩 Indonesia | |
| 4 | Gunung Leuser National Park | 🇮🇩 Indonesia | |
| 5 | Sepilok | 🇲🇾 Malaysia |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | San Diego Zoo | 🇺🇸 United States | |
| 2 | Columbus Zoo and Aquarium | 🇺🇸 United States | |
| 3 | Bronx Zoo | 🇺🇸 United States | |
| 4 | Zoo Knoxville | 🇺🇸 United States | |
| 5 | Saigon Zoo and Botanical Gardens | 🇻🇳 Vietnam | |
| 6 | Bandung Zoo | 🇮🇩 Indonesia | |
| 7 | Kung Fu Corals | 🇺🇸 United States |
Very likely
About 80% of wildlife watchers report a Silvered Leaf Monkey sighting in Bako National Park on a given day, based on 293 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 3rd most-seen of the 6 mammals we can rate there. Over three days the chance rises to over 90%, if each day is a fresh chance.
March and December
In those months about 90% of wildlife watchers report a Silvered Leaf Monkey in Bako National Park on a given day, against about 50% in January, the lowest month.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Silvered Leaf Monkey sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
Yes
Of the 5 parks where we can rate Silvered Leaf Monkey sightings, Bako National Park has the highest daily chance: about 80%. Next come Kinabatangan Wildlife Sanctuary (Malaysia, about 60%) and Tanjung Puting National Park (Indonesia, about 40%). All parks ranked.
Same family: Cercopithecidae
The closest relatives of the Silvered Leaf Monkey that you can see in Bako National Park (family Cercopithecidae, Old World Monkeys) are Proboscis Monkey (about 80%) and Crab-eating Macaque (about 70%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Silvered Leaf Monkey is recorded against all the mammals logged in Bako National Park (293 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.
