"Western Birds" covers every breeding species west of the Rockies, with 1,314 color photographs and 168 drawings. The easy-to-remember field marks use the unique How to Identify Birds method created by John Farrand, Jr. Picture-and-text accounts of over 460 species, with easy-to-remember field marks. It contains photographic flight comparisons and is keyed to How to Identify Birds. It is the companion volume to "Eastern Birds."