Superb nine-volume complete set - the culmination of more than 20 years work.
Volumes cover: Ostrich to Ducks; Hawks to Bustards; Waders to Gulls; Terns to Woodpeckers; Tyrant Flycatchers to Thrushes; Warblers; Flycatchers to Shrikes; Crows to Finches; and Buntings and New World Warblers.