Edited by Jorje I Zalles and Keith L Bildstein, 419 pages £15 BUY NOW At least 63 percent of the world's raptors migrate. Raptor Watch, compiled from contributions by over 800 observers worldwide, is a guide to 388 hotspots where these birds can be seen in their thousands. A repository of information for the specialist, this book is also a strategy document enabling conservationists working at the local and national level to cooperate globally to protect raptor migration networks. "The most geographically complete reference list yet on hawk migration. A great starting place for anyone interested in witnessing or studying hawk migration anywhere in the World" - Birding (October 2001). "A milestone in raptor migration science" - Ibis 143 (2001).