Bob PerrillBob Perrill has a BS in biology, spent four years in the air force, and two summers at Rocky Mountain National Park. He moved to Tucson, became the Assistant Curator of Plants at the Arizona-Sonora Desert Museum, and was a field biologist, surveying or rare and endangered species across the southwest. He retired from the University of Arizona after eighteen years. Currently, he is a volunteer naturalist at Saguaro National Park West. He is a nature photographer, has written non-fiction articles, and contributed to scientific publications. He lives with his wife on two acres of Sonoran Desert habitat. Read More Read Less