Hawks, Owls, and Wildlife by John Craighead and Frank Craighead (1969) Paperback, fair condition. The authors, employees of the US Fish and Wildlife Service, present their findings from years of field research into the predatory behaviors of hawks and owls. They reveal predation, not as a cruel and wasteful process, but as a natural biological control or regulator.

Hawks in Flight -- The Flight Identification of North American Migrant Raptors by Pete Dunne, David Sibley, and Clay Sutton, inscribed by Pete Dunne (1988) Paperback, good condition. This book shows how to recognize hawks at a distance by their general body shape, the way they move, and the places they are most likely to be seen.

Hawk Watch -- A Guide for Beginners by Pete Dunne, Debbie Keller, and Rene Kochenberger, illustrated by David Sibley (1993) Paperback, good condition. This slim volume provides instruction for students and amateurs who want to participate in the annual Hawk Watch Project. It teaches hawk identification skills as well as skills for data gathering and analysis.

Atlas of Wintering North American Birds -- An Analysis of Christmas Bird Count Data by Terry Root (1988) Hardback, fair condition. A statistical analysis of 10 years of CBCs.