مؤلف: Douglas W. Smith

Douglas W. Smith served for nearly three decades as a wildlife biologist at Yellowstone National Park, spearheading an initiative to reintroduce wolves to Yellowstone and leading the park’s bird and elk programs. He retired in 2022. Lauren E. Walker is a biologist at the US Geological Survey’s Bird Banding Laboratory and was formerly a wildlife biologist for several years with the Yellowstone bird program. Katharine E. Duffy was a supervisory education ranger in Yellowstone and Grand Teton National Parks.