On June 4, 2013, Buck 8917 did something weird, for a deer: He took a long, purposeful walk. Researchers from Penn State had captured and put a GPS collar on the adult male that spring in Bald Eagle State Forest, about 15 miles northeast of State College, Pennsylvania. Put a tracker on most deer and you’ll find they stick pretty close to their home range, which was true for 8917. He sauntered, stopped to forage or bedded down for a nap mostly within an undulating square mile of forest full of to