Barn swallow and strawberry boxes (IMAGE) University of California - Davis Caption A barn swallow perches on a hand by boxes for strawberries. Barn swallows tend to swoop over the centers of strawberry farms to eat pests and other insects. Credit Elissa Olimpi/UC Davis Usage Restrictions Provide 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.