With over 950 species and legions of bird watchers, Southern Africa supports as many popular bird guides as North America. This comprehensive guide by Ian Sinclair and colleagues, the fourth edition of the comprehensive, beautifully illustrated SASOL guide, features 200 dazzling color plates by Peter Hayman and Norman Arlott. Plates, maps and text are integrated, making this book a pleasure to use in the field. A Princeton Field Guide.  (SAF12, $35.00)