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Primates

, Volume 23, Issue 1, pp 138–139 | Cite as

An unusual instance of tool-use among wild orang-utans in tanjung puting reserve, indonesian borneo

  • Birute M. F. Galdikas
Short Communications

Abstract

Despite several recent orang-utan (Pongo pygmaeus) field studies in Borneo and Sumatra, tool-use has never been reported among wild orang-utan populations in contexts other than agonistic displays or nesting/covering behaviors. During a continuous 9-year study at Tanjung Puting Reserve, Central Indonesian Borneo, only one instance of wild orang-utan tool-use outside these two contexts was observed: an adult male orang-utan broke off a dead branch and used it to scratch his rear for half a minute.

Keywords

Field Study Animal Ecology Dead Branch Pongo Pygmaeus Agonistic Display 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Japan Monkey Centre 1982

Authors and Affiliations

  • Birute M. F. Galdikas
    • 1
  1. 1.Simon Fraser UniversityCanada

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