Recording Bison (IMAGE) University of California - Davis Caption UC Davis geography graduate student Megan Wyman measures the amplitude of a bison's bellow in Nebraska's Fort Niobrara National Wildlife Refuge. Credit Paul Haverkamp/UC Davis Photography (c) UC Regents Usage Restrictions The image may only be used with appropriate caption and 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.