Mammals Active during the day

Kinabalu Squirrel

Callosciurus baluensis

iNaturalist Wikipedia

A vibrant highland specialist, the Kinabalu Squirrel is a jewel of the Bornean mountains, known for its fiery orange belly and distinctive racing stripes. Endemic to the mist-shrouded forests of Sabah, this charismatic rodent is a favorite among trekkers and wildlife photographers alike.

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Quick Identification

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Size

Total length 35-45 cm (14-18 in); body 20-24 cm (8-9.5 in); weight 250-400 g (9-14 oz)

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Colors

Grizzled blackish-grey upperparts, vibrant reddish-orange underparts, and distinctive flank stripes consisting of a thin buff line above a broader black line.

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Key Features

Reddish-orange underparts contrasting with dark back
Thin buff side stripe over a broader black stripe
Grizzled blackish-grey tail and upper body
Bushy, dark tail often held in a curve

When You’ll See Them

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Activity pattern Active during the day

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Peak hours 7-11 AM, 3-5 PM

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Season Year-round

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Diet Omnivorous, feeding on a variety of highland fruits, seeds, and acorns (lithocarpus), supplemented by insects, larvae, and occasionally tree bark.

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Habitat High-altitude montane forest, sub-alpine scrub, and oak-laurel forests.

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Where Does the Kinabalu Squirrel Live?

This striking rodent is native to the island of Borneo, specifically the highland regions of East Malaysia in the state of Sabah. While its name highlights Mount Kinabalu, its core range extends throughout the Crocker Range and other mountainous areas of northern Borneo. It is a true island endemic, found nowhere else on Earth, thriving in the cool, moist climates of the Southeast Asian mountain spine.

Basemap © OpenStreetMap contributors

1 Countries

25K km² Range

Least Concern Conservation

MY Malaysia

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iNaturalist / Verified observation data

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Behavior

The Kinabalu Squirrel is a high-altitude specialist that brings a splash of color to the misty montane forests of Borneo. These squirrels are primarily arboreal, spending much of their time navigating the mossy branches of oak and chestnut trees, though they are notably more willing to descend to the lower canopy and forest floor than some of their lowland relatives. They are active during the day, using their keen eyesight to spot both food and potential predators like eagles or martens.

While they are generally solitary or seen in pairs, they are highly vocal. Their chattering calls often echo through the highlands, serving as territorial markers or alarm signals. To humans, they are often seen as bold and inquisitive, particularly near park headquarters or mountain trailheads where they have become accustomed to the presence of hikers, though they remain wild and cautious in more remote areas of the Crocker Range.

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Camera Tips

Capturing the Kinabalu Squirrel on camera requires focusing on the vertical transitions between the canopy and the forest floor. Since these squirrels are frequently active in the mid-story and on mossy logs, mount your AI camera at chest height (about 4-5 feet) on a tree with visible lichen or moss growth. Angling the camera slightly downward toward a flat branch or a fallen log that acts as a natural 'bridge' will increase your chances of capturing a clear profile shot of their distinctive flank stripes.

While we don't recommend feeding wild animals, placing your camera near native fruiting trees like highland figs or oak trees dropping acorns will naturally attract them. They are most active in the mid-morning when the mountain mist begins to clear and the sun warms the bark. Ensure your camera's trigger speed is set to its fastest setting, as like most Callosciurus species, they move in quick, jerky bursts and can easily blur a slow shot.

During the monsoon season (October to February), the heavy rains can cause false triggers. Use a protective housing to keep the lens clear of tropical condensation. If you are setting up near a highland garden or lodge, look for 'travel corridors' where squirrels jump from the forest edge to man-made structures; these predictable paths are goldmines for high-quality, close-up footage of their vibrant orange bellies.

Similar Species

Species that look similar or are commonly confused with Kinabalu Squirrel.

Bornean Mountain Ground Squirrel

Smaller, with a much shorter tail and lacks the vibrant orange underparts of the Kinabalu Squirrel.

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Frequently Asked Questions

Kinabalu Squirrels are diurnal, meaning they are active during the day. They typically have two peaks of activity: one in the mid-morning after the sun has warmed the forest, and another in the late afternoon before dusk.

If you live in the highlands of Sabah, you can attract them by preserving native oak and fruit-bearing trees. They are naturally curious and will visit gardens that provide high-altitude cover and natural food sources like acorns.

They have a diverse diet consisting of highland fruits, seeds, and nuts—particularly acorns from the Fagaceae family. They also supplement their diet with insects and tree sap.

They are not typical suburban squirrels. They are specialized for high-altitude forests and are generally only seen in mountain resorts, highland gardens, or parks near the Crocker Range.

While both have stripes, the Kinabalu Squirrel has a grizzled blackish back and lives at much higher elevations. Prevost’s Squirrel usually has a jet-black back and a much brighter white stripe, and is typically found in the lowlands.

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