We report the results of the 2006 KUPRI (Kyoto University Primate Research Institute) surveys in Diecké forest, Guinea, Western Africa.
Research in the Diecké forest by KUPRI started in 1999 with a preliminary survey1. This continued in 2000, with the survey of Nonah and Yossono areas2. The main objective was to find a good research site that would allow for comparative studies between different communities of wild chimpanzees. It has been acknowledged, since the first field season, that Diecké chimpanzees crack open nuts (Panda oleosa and Coula edulis) using stone and root anvils and stone hammers. Nut-cracking behaviour had not been observed directly until today and there are very few reports on chimpanzee's direct observation
Keywords:
SBTMR
