Clark's Nutcracker on Subalpine Fir (IMAGE) The Institute for Bird Populations Caption A Clark's Nutcracker perches in a subalpine fir tree. Credit Photo by Jason Ransom Usage Restrictions Please credit to Jason Ransom 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.