Books by Donald S. Heintzelman
Guide to Hawk Watching in North America (Falconguide)
Hawks and Owls of Eastern North America
The Complete Backyard Birdwatcher 's Home Companion
Wildlife protectors handbook
A guide to hawk watching in No
A guide to hawk watching in North America
Tundra swan hunting
Tundra swan hunting
The migrations of hawks
Guide to owl watching in North America
The birdwatcher's activity book
A world guide to whales, dolphins, and porpoises
The illustrated bird watcher's dictionary
A manual for bird watching in the Americas
Hawks and owls of North America
North American ducks, geese, & swans
A guide to eastern hawk watching
Autumn hawk flights
The hawks of New Jersey
The hawks of New Jersey