Wildlife of Borneo

Mountain treeshrew

Tupaia montana

At studied pitcher plants it visited during daylight to feed on sweet secretions.

Least concernEndemic to Borneo
Species details & taxonomy
Species
Tupaia montana
Genus
Tupaia
Family
Tupaiidae
Order
Scandentia
Class
Mammalia
Mountain treeshrew — Tupaia montana
Mountain treeshrew (Tupaia montana).Лариса Артемьева · Wikimedia Commons · CC0 · Original

Daily life

At studied pitcher plants it visited during daylight to feed on sweet secretions. This observation is specific to the monitored relationship; it is not a promise of easy daytime sightings along every mountain trail.

Sources & references · 2Mammal Diversity Database, American Society of Mammalogists · Tupaia montanaPLoS ONE, 2011 · A unique resource mutualism between Nepenthes rajah and small mammals

A mammal of Borneo's mountains

The mountain treeshrew belongs to its own mammalian order, Scandentia, rather than to the true shrews. It is native to Borneo's uplands, including the Kinabalu and Crocker mountain landscapes. Museum specimens and field measurements show that body form varies across elevations, so individuals need not look identical throughout the range. It searches for food around the forest floor and vegetation, taking invertebrates and plant foods. Its importance to some highland pitcher plants comes from nectar visits: droppings left at the pitcher opening supply nutrients to the plant.

Sources & references · 3PLOS ONE · Challenging ecogeographical rules: Phenotypic variation in the mountain treeshrew along tropical elevational gradientsHandbook of the Mammals of the World · Tupaia montana accountPLoS ONE, 2011 · A unique resource mutualism between Nepenthes rajah and small mammals

Recognising a treeshrew

Plush brown fur, a pointed face and a bushy tail give the mountain treeshrew a squirrel-like appearance. The underside is paler. Look at the whole animal: mountain ground squirrels occur alongside it and can be mistaken for treeshrews.

Sources & references · 1Handbook of the Mammals of the World · Tupaia montana account

Nests close to the ground

Radio-tracked animals slept in leaf nests tucked beneath moss and roots, between rocks, or inside fallen wood. They used natural gaps rather than excavating a burrow. Small ranges can overlap between a male and female. Alarm calling and tail movements accompany encounters with perceived danger.

Sources & references · 1University of California Press, Louise H. Emmons · Tupai: A Field Study of Bornean Treeshrews

Across the mountain slopes

Unlike a mammal confined to one summit zone, this treeshrew occupies a broad elevational range. Genetic research on Kinabalu and Tambuyukon found little structure across a steep ecological gradient. Its mountain populations therefore show substantial connections despite changes in forest conditions with height. The species is globally Least Concern.

Sources & references · 2Molecular Ecology, Parker et al. · Little genetic structure in a Bornean endemic small mammal across a steep ecological gradientMammal Diversity Database, American Society of Mammalogists · Tupaia montana

Where to look

A recorded occurrence does not guarantee a sighting or visitor access. Read the area and experience guides for habitat, responsible observation, guiding and current access before choosing a trip. Keep wildlife at a distance and follow local restrictions.

Places with documented occurrence

Sources & references

PLoS ONE, 2011 · A unique resource mutualism between Nepenthes rajah and small mammalsAccessed: 2026-10-04

Mammal Diversity Database, American Society of Mammalogists · Tupaia montanaAccessed: 2026-10-04

Molecular Ecology, Parker et al. · Little genetic structure in a Bornean endemic small mammal across a steep ecological gradientAccessed: 2026-10-04

University of California Press, Louise H. Emmons · Tupai: A Field Study of Bornean TreeshrewsAccessed: 2026-10-04

Handbook of the Mammals of the World · Tupaia montana accountAccessed: 2026-10-04

PLOS ONE · Challenging ecogeographical rules: Phenotypic variation in the mountain treeshrew along tropical elevational gradientsAccessed: 2026-10-04

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