Status and Distribution of South Carolina Birds
Post, William; Gauthreaux, Sidney A. Jr.
Arizona Game Birds
Brown, David E.
Wild America: The Record of a 30,000 Mile Journey Around the Continent by a Distinguished Naturalist
Peterson, Roger Tory & James Fisher
Birds of Prey: Natural History and Conservation of North American Raptors
Snyder, Noel F.R.; Snyder, Helen A.
Atlas of the Breeding Birds of Maryland and the District of Columbia
Robbins, Chandler S.
The Birds of Illinois
Bohlen, H. David
A Field Guide to Hummingbirds of North America [HC]
Williamson, Sheri L.
Bird Communities at Sea Off California 1975 to 1983. SAB No. 11
Briggs, Kenneth T.; Tyler, William Breck; Lewis, David B.; Carlson, David R.
Birds of the Carolinas (1st ed)
Potter, Eloise F.; Parnell, James F.; Teulings, Robert P.
Birds of Phoenix and Maricopa County Arizona. Third edition
Witzeman, Janet and Troy Corman
Seabirds of Hawaii: Natural History and Conservation [HC]
Harrison, Craig S.
ABA Field Checklist - Weatherproof field card
American Birding Association