Bird found in cacao agroforest (IMAGE) University of Würzburg Caption A bird found in cacao agroforests in Northern Peru, the groove billed ani. Birds, when occurring in cacao agroforests together with bats, ensured cacao yields in the study region. Their presence increased yield by 114%, compared to their absence. Credit Justine Vansynghel / Universität Würzburg Usage Restrictions None License Original 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.