White-handed Gibbon (Hylobates lar) lives in tropical and subtropical rainforest across Southeast Asia and southern China. Its conservation status is Endangered.
Fascinating facts about the White-handed Gibbon
- Its arms are built for swinging: the lar gibbon's intermembral index is 129.7, one of the highest of the primates, and its curved fingers, elongated hands and extremely long arms let it brachiate through the canopy with great momentum. This anatomy lets the species zip through trees.
- Half of its calories come from fruit, but leaves supply another 29 % and insects 13 %, with flowers rounding out the diet at 9 %. In the summer, when figs and leaves are scarce, insect consumption spikes twenty-fold compared to winter, showing how the gibbon flexibly shifts to protein-rich prey to survive seasonal shortages.
- A typical day lasts about 8.7 hours, beginning at sunrise and ending roughly 3.4 hours before sunset. Within that window the gibbon spends 32.6 % feeding, 26.2 % resting, 24.2 % traveling, 11.3 % in social activities, 4.0 % vocalizing and 1.9 % in inter-group encounters.
- Rescue work has saved hundreds: Bo, a 37-year-old male rescued in 1993 after five years as a pet, is one of roughly 400 gibbons the Gibbon Rehabilitation Project has rescued. Between 2002-2012 the team released 30 gibbons in Phuket and 11 were born in the wild; since 2014 at least 30 have been released or born in Chiang Mai and 66 in Phuket, creating a fledgling, self-sustaining population that proves re-introduction can work on a small scale.
- It spans the widest north-south stretch of any gibbon, ranging from Indonesia up through Thailand and historically into southwest China, yet it never climbs above 1,200 meters (3,900 ft) altitude.
Sources
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At a glance
RangeSoutheast Asia and southern China
HabitatTropical and subtropical rainforest
DietFruit and leaves
About the White-handed Gibbon
In the lush canopies of Southeast Asia's ancient forests, the white-handed gibbon swings effortlessly, its agile form a blur of motion as it traverses the treetops with a graceful elegance, its haunting melodies echoing through the misty dawn air. With each precise leap, this endangered primate embodies the very essence of arboreal sophistication, its prehensile hands and feet working in perfect harmony to navigate the intricate network of branches and vines. As it moves, the gibbon's song rises to a crescendo, a poignant reminder of the beauty and fragility of this vanishing world.
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