National Geographic Field Guide to the Birds of Eastern North America
Jonathan Alderfer is a widely published author and field guide illustrator. He is co-author, with Jon L. Dunn, ofNational Geographic Birding Essentials,co-editor ofNational Geographic Field Guide to the Birds of North America, 5th edition,and editor ofNational Geographic Complete Birds of North America.He is also chief consultant for the National Geographic Birding program.Jon L. Dunn is an expert on the identification and distribution of North American birds. Dunn is a co-author ofNational Geographic Birding Essentials. He served as chief consultant for four previous editions ofNational Geographic Field Guide to the Birds of North America,and as editor of the fifth.