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. 2021 Nov 12;7(46):eabi4883. doi: 10.1126/sciadv.abi4883

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Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 4. — (A) An example activity sequence following a single individual over the course of a video. The blank white spaces are any activities that are not nut cracking or eating. Note that eating typically follows nut cracking events. (B) Proportion of time spent nut cracking as a fraction of total time visible. (C) Average time spent nut cracking per eating event. Computed by dividing the cumulative time spent nut-cracking over the total number of eating events as a function of age and sex. Photo credit: Kyoto University, Primate Research Institute.