White-Footed Mouse (IMAGE) Cary Institute of Ecosystem Studies Caption Populations of white-footed mice are declining due to the shortage of acorns. Credit Cary Photo Archive Usage Restrictions Used with the press release 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.