This is based on and supplementary to The Hawks of North America by John Bichard May, published in 1935, and is published under the sponsorship of the National Audubon Society, which should assure its dependability. It treats of the many types of vultures, kites, accipiters, buteos, eagles, harriers, ospreys, caracaras, falcons and owls, giving their different names, details for recognition, nesting habits, range of habitation, and the history of each individual species. The stress here is on the true role of the predators as a helper of, rather than a competitor to, man- as they control rodents, remove carrion and are instrumental in maintaining balanced wild life communities. It points out that public sentiment, generally hostile, has brought about the decline of some avian families and the extinction of others, and would educate for legal protection of beneficial raptores. There will be 48 full color plates by Allan Brooks and the black and white silhouettes are by Roger Tory Peterson. Of importance to all conservation agencies and groups, this should also be part of agricultural and sporting training.