Difficult field conditions, combined with their extreme range and wide plumage variations, make hawks, eagles, vultures, and other diurnal birds of prey notoriously difficult to identify. Two of North America's most experienced raptor identification experts provide a guide to field marks of raptor species while showing the full range of plumage variation. The guide is illustrated with over 360 colour photographs, and supported with a comprehensive text describing all 42 species of diurnal raptor. Also included are 14 essays on the most difficult raptor ID problems.
The authors are both experienced field birders with particular expertise in raptor identification. They have both authored a number of raptor identification guides in the past.