Journal Article

Down from the treetops: Red langur (Presbytis rubicunda) terrestrial behaviour


Using direct observations and camera traps at eight sites across Indonesian Borneo we show how red langurs (Presbytis rubicunda) are more terrestrial than previously believed, regularly coming to the ground. This unusual behavior has been found at six of the eight sites surveyed. We find that red langurs come to the ground more frequently in disturbed forests, specifically ones which have been impacted by logging, fire, and hunting, though more data are needed to confirm this as a direct correlation. We also found a trend towards decreased ground use with increased elevation of the habitat. When on the ground, red langurs are predominantly engaged in feeding (50% direct observations, 61% camera traps) and traveling (29% direct observations, 13% camera traps). Red langurs are found on the ground throughout the day, at similar times to activity periods of the apex predator, the Sunda clouded leopard (Neofelis diardi). We suggest that ground use by red langurs could be an adaptation to disturbed forest to exploit additional food sources and to facilitate travel.

Attached files


Cheyne, Susan M.
Neale, Claire J.
Thompson, Carolyn
Wilcox, Cara H.
Ehlers Smith, Yvette C.
Ehlers Smith, David A.

Oxford Brookes departments

Faculty of Humanities and Social Sciences\Department of Social Sciences


Year of publication: 2018
Date of RADAR deposit: 2018-10-05

Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License

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