Abstract
This research examined the manufacture and use of bamboo tools by capuchin monkeys (Cebus apella). We presented groups of subjects with bamboo, and apparatus that accommodated the use of probing and cutting tools. Four monkeys manufactured probing tools by breaking bamboo strips, detaching shoots from larger branches, and removing leaves and stubs. A fifth subject used probing tools but did not modify them. In a second experiment five capuchins manufactured bamboo cutting tools. A sixth subject used cutting tools but did not modify them. These results demonstrate a simple bamboo-tool technology in capuchins. We hypothesize that east Asian Homo erectus could have used similar or more advanced manufacturing techniques to produce bamboo tools suitable for purposes that included probing and cutting.
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