PB Cloud Test

Paul A. Johnsgard is Foundation Professor of Biological Sciences Emeritus at the School of Biological Sciences, University of Nebraska-Lincoln. His previous works include nearly seventy books, mostly reference works on bird groups and the ecology of Nebraska and the Great Plains.

Thomas D. Mangelsen is one of the world's premier nature photographers. He was named BBC's Wildlife Photographer of the Year in 1994 and One of the 100 Most Important People in Photography by American Photo magazine. His work is offered in eight MANGELSEN--Images of Nature galleries across the United States.