Primate Behaviour

Our OuTrop programme is unique among many other primate projects in that we focus our research on three species at the same time, in the same forest:

  • Southern Bornean orangutan (Pongo pygmaeus wurmbii) – IUCN Red List Critically Endangered
  • White-bearded gibbon (Hylobates albibarbis) – IUCN Red List Endangered
  • Red langur monkey (Presbytis rubicunda) – IUCN Red List Vulnerable

Using established methods which allow comparison between the primates, we are able to study and understand their behavioural ecology, feeding, social behaviour, communication (calls and singing), home ranges, population trends, habitat requirements, density and the impacts of human disturbance. OuTrop carries out some of the longest running, continuous conservation research on these wild Asian primates:

  • Orangutan Behaviour Project established in 2003
  • Gibbon Behaviour Project established in 2005
  • Red Langur Research Project established in 2009


Click on the links below to learn more about the primates we work to protect

Orangutan project Gibbon project Kelasi (1) - Andrew Walmsley - 2012



Red langurs