1975. Very Good hard cover with dust jacket. Dust jacket has chips and tears. A most comprehensive and authoritative compendium of data in print for all of the nearly sixty species of ducks, geese, and swans known to breed in North America. Illustrated with over sixty detailed waterfowl line drawings, thirty-one color photographs, and ninety-six black and white photographs, this is the definitive work on its subject and a treasury of information for biologists, ornithologists, waterfowl hunters, and bird lovers.