When the University of Arizona announced plans to build observatories on Mt. Graham, atop the Pinaleno Mountains, the construction was seen as a potential threat to an isolated species found only on this sky island. The Mt. Graham red squirrel was declared "endangered" by the US Fish and Wildlife Service. Legal action required the university to provide funds for research and monitoring the Mt. Graham red squirrel.

This book is derived from a symposium on the Mt. Graham red squirrel and offers a comprehensive picture of the ecology of this red squirrel and the impacts on its mountain...