Optic flow (IMAGE) University of Würzburg Caption Measurements have shown how the hummingbird hawkmoth uses optic flow for flight control and orientation. Credit (Image: Anna Stoeckl / University of Wuerzburg) 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.