Egyptian fruit bat (IMAGE) Carnegie Mellon University Caption The vocalizations of humans, bats, whales, seals and songbirds vastly differ from each other. But CMU and UC Berkeley researchers have found parts of the genome that have evolved and are associated with vocal learning across mammals. Credit University of California, Berkeley 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.