Data are presented from an island in Central Kalimantan, Indonesia which has …

• Abstract
• Background
• Results and discussion
• Conclusion
• Methods
• Miscellaneous
• References
• Table 1
• Table 2
• Table 3
• Table 4
• Table 5
• Figures

Authors' contributions

SMC conceived of the study and carried out the behaviour and ecological habitat analysis for this research.

Acknowledgements

SMC would like to thank Aurelién Brulé (Chanee), the director of the Kalaweit Project, and all staff who helped with data collection. Also to LIPI, the Indonesian Institute of Science for permission to work in Kalimantan. Funding was provided by The Gibbon Foundation, the C.K. Marr Educational Trust and Downing College, Cambridge.