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A case report of a novel type of stick use by wild chimpanzees
Takeshi Nishimura1, Naobi Okayasu, Yuzuru Hamada
1Primate Research Institute, Kyoto University, 41 Kanrin, Inuyama, Aichi 484-8506, Japan. nishimur@pri.kyoto-u.ac.jp
Primates; Journal of Primatology
|April 11, 2003
Abstract:
We have found evidence that wild chimpanzees used stout sticks to dig into one end of a decayed fallen trunk from the side and a long stick with a frayed end to dig into or brush its stump, in the Moukalaba Reserve, Gabon. This type of stick use by wild chimpanzees has not been recorded in any habitat. This finding should contribute to future studies and discussions of variations in tool use and cultural processes among wild chimpanzees.