Chimpanzees Checking Tree (IMAGE) Max-Planck-Gesellschaft Caption This image shows chimpanzees gazing up tree crowns in search for fruit. Credit Ammie Kalan Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.