Concept of Pattern (IMAGE) Tokyo University of Agriculture and Technology Caption Arboreal feeding signs are more likely in individual trees with larger mast energy. Arboreal feeding signs were created more during poor mast years. Credit K.Tochigi Usage Restrictions With credit 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.