Edward C. Beedy was a co-author of Discovering Sierra Birds and has authored numerous technical publications and articles on Sierra birds.
Edward R. Pandolfino is President of Western Field Ornithologists and a Regional Editor for Northern California for North American Birds.
Keith Hansen is a professional bird artist who illustrated Discovering Sierra Birds, Distributional Checklist of North American Birds, Birds of Yosemite and the East Slope, California Wild Lands, A Guide to the Nature Conservancy Preserves, and The Natural History of the Point Reyes Peninsula, among other books.