Slit-Faced Bat (IMAGE) University of Cincinnati Caption UC researchers found that the echoes of bats could be compressed digitally by 90% without losing much information, suggesting their calls are not very complex. Credit Michael Miller 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.