Flying Squirrels (IMAGE) National Institute for Environmental Studies Caption Flying squirrels are among the mammals estimated to be most highly impacted by ironwork. (Photo by Hisashi Yanagawa) Credit NIES Usage Restrictions Credit required. 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.