Pete Devine has shared the wonders of Yosemite National Park with visitors for more than 25 years. He is the principal naturalist for the Yosemite Conservancy and helps plan their Yosemite Outdoor Adventures program. Pete has worked as a ranger in three national parks, a river guide on the Colorado River, an archeologist in New Zealand, a teacher on Cape Cod and a naturalist and guide in China. He is a cyclist, skier, backpacker and birder, as well as a popular presenter at science, education and outdoor conferences. Pete has served on several non-profit boards and has written numerous articles on Yosemite. His knowledge of the park's history, geology and wildlife is extensive, and in 2009, he was awarded the highest honor given by the Association for Environmental and Outdoor Education. Pete is an expert on Steller’s Jays, makes annual studies of the Lyell Glacier, and is married to a Yosemite archeologist.