Paul A. Johnsgard
Paul A. Johnsgard is Foundation Professor of Biological Sciences Emeritus at the School of Biological Sciences, University of Nebraska-Lincoln. His previous works include 56 books, mostly reference works on bird groups, such as cranes and waterfowl, and the ecology of Nebraska and the Great Plains. Thomas D. Mangelsen is one of the world's premier nature photographers. His work is frequently seen in major publications such as "National Geographic," "Audubon," "Smithsonian," "Time," and "Life" and in his Images of Nature galleries in sixteen locations across North America.