Hardcover. NY, Doubleday, 1st trade, 1974, Book: Very Good, Dust Jacket: None, Hardcover in a lightly worn slipcase. First trade edition limited to 3000 copies. 278 pages with 58 color plates plus many drawings by Karl Karalus, text by Allan Eckert. Clean copy.
 "The Owls of North America, North of Mexico: All the Species and Subspecies Illustrated in Color and Fully Described by: Eckert, Allan W.; Karalus, Karl E.")