Raptors of the world: a field guide.
London: Christopher Helm/A & C Black, 2005. Octavo, colour illustrations, maps, softcover.
This new field guide uses all of the plates from Raptors: birds of prey of the world with a concise, revised text on facing pages, to create a conveniently-sized, lightweight field reference covering all 320 raptor species. The book also has an updated colour distribution map for each species. Much of the extensive introductory material has been retained in this guide, with the addition of a complete species list containing all subspecies and brief details of their ranges.