Sundasciurus tenuis
Silhouette: Joseph Smit · PhyloPic
In 3 days ~40% in a week ~70%
The slender squirrel (Sundasciurus tenuis) is a species of rodent in the family Sciuridae. It is arboreal and found in Indonesia, Singapore, Malaysia, and Thailand. The body is brown on the upper parts and light grey on the underparts. The body measures about 13–16 cm, with a slightly shorter slender tail. It feeds on soft bark, fruits and insects.
Ecology Asia photos and description Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Luang National Park | 🇹🇭 Thailand | |
| 2 | Taman Negara National Park | 🇲🇾 Malaysia | |
| 3 | Gunung Leuser National Park | 🇮🇩 Indonesia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Singapore | 🇸🇬 Singapore | |
| 2 | Kuala Lumpur | 🇲🇾 Malaysia |
With luck
About 10% of wildlife watchers report a Slender Squirrel sighting in Gunung Leuser National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 15th most-seen of the 19 mammals we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
June
In that month about 30% of wildlife watchers report a Slender Squirrel in Gunung Leuser National Park on a given day, against under 5% in May and July–December, the lowest months.
Between 3 and 6 am
Across all the parks we cover, that three-hour window holds the most Slender Squirrel 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 3
Of the 3 parks where we can rate Slender Squirrel sightings, Gunung Leuser National Park ranks 3rd at about 10%. The best odds are in Khao Luang National Park (Thailand, about 20%) and Taman Negara National Park (Malaysia, about 20%).
Same family: Sciuridae
The closest relatives of the Slender Squirrel that you can see in Gunung Leuser National Park (family Sciuridae, Squirrels) are Plantain Squirrel (about 20%), Prevost's Squirrel (about 20%) and Black Giant Squirrel (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Slender Squirrel is recorded against all the mammals logged in Gunung Leuser National Park (8 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.
