North Bornean Gray Gibbon
Hylobates funereus
- KingdomAnimalia (Animals)
- PhylumChordata (Chordates)
- ClassMammalia (Mammals)
- OrderPrimates
- FamilyHylobatidae (Gibbons)
- GenusHylobates (Dwarf Gibbons)
- SpeciesHylobates funereus (North Bornean Gray Gibbon)
About the North Bornean Gray Gibbon
The eastern grey gibbon or northern grey gibbon (Hylobates funereus) is a primate in the gibbon family, Hylobatidae. Formerly, the eastern grey gibbon and western grey gibbon (H. abbotti) were considered conspecific with the southern grey gibbon (H. muelleri), but more recent studies indicate that all three are distinct species, and both the IUCN Red List and the American Society of Mammalogists consider them such. However, they can still hybridize with one another where their ranges meet.
It is endemic to northeastern Borneo, and is found in Kalimantan, Sarawak, and Brunei. It ranges from Sabah south to the Mahakam River in East Kalimantan, and west to Baram in Sarawak. As with the other two grey gibbons, this species is thought to be endangered due to heavy deforestation in Borneo, as well as increases in forest fires exacerbated by El Niño events. It is also threatened by illegal hunting and capture for the pet trade. Wikipedia →
Closest Relatives at Sepilok
Bornean Orangutan
Pongo pygmaeus
Philippine Slow Loris
Nycticebus menagensis
Proboscis Monkey
Nasalis larvatus
Southern Pig-tailed Macaque
Macaca nemestrina
Horsfield's Tarsier
Cephalopachus bancanus
Maroon Leaf Monkey
Presbytis rubicunda
Crab-eating Macaque
Macaca fascicularis
Silvered Leaf Monkey
Trachypithecus cristatus
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 | Daily sighting probability |
|---|---|---|---|
| 1 | Danum Valley Conservation Area | 🇲🇾 Malaysia | |
| 2 | Sepilok | 🇲🇾 Malaysia | |
| 3 | Kinabatangan Wildlife Sanctuary | 🇲🇾 Malaysia | |
| 4 | Kinabalu Park | 🇲🇾 Malaysia |
Quick answers
What are the chances of seeing a North Bornean Gray Gibbon in Sepilok?
About 20% of wildlife watchers report a North Bornean Gray Gibbon sighting in Sepilok, based on 23 verified sightings from GBIF citizen-science data.
When is the best time to see North Bornean Gray Gibbon in Sepilok?
November has the highest sighting rate for North Bornean Gray Gibbon in Sepilok in our monthly data.