This book represents a complete revision of the authors' previous authoritative work. It incorporates all the significant changes to bird taxonomy that have occurred over the past six years and remains the only single-volume work to list subspecies. Ornithologists are constantly reviewing and revising the scientific and common names of the world's birds--combining and dividing established species and genera. Despite the fact that opinions will continue to vary on the details of avian classification, lists such as this provide a baseline reference to scientific and English names, taxonomy, and distribution for both the professional and amateur ornithologist and taxonomist.