Fieldwork (IMAGE) Field Museum Caption Rangers from Itwombe Natural Reserve crossing a river to get to the shallows on the other side to collect stilt mice. Credit (c) Terry Demos, Field Museum Usage Restrictions Please include credit to: (c) Terry Demos, Field Museum 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.