The second edition of this highly acclaimed monograph has been extensively revised to take account of recent information, and several plates have been revised by the artist.
`This guide tackles one of the most difficult families...A great deal of trouble has been taken to consult authorities on particular species and areas in order to produce species accounts, and distribution maps, that are as up-to-date as possible...those visiting parts of tropical America, Africa or Asia will need to add this guide to their luggage.' Bulletin of the British Ornithologists' Club