The Birds of Illinois
Bohlen, H. David
Birds of the Indiana Dunes
Brock, Kenneth J.
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.
Arizona Game Birds
Brown, David E.
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
The Birds of Ohio
PETERJOHN, Bruce G.
Warblers of the Great Lakes Region and Eastern North America
Earley, Chris G.
Oklahoma Breeding Bird Atlas [HC]
Reinking, Dan L.