Birds of New York State
Status and Distribution of South Carolina Birds
Post, William; Gauthreaux, Sidney A. Jr.
The Sibley Guide to Birds, First edition, first printing
Sibley, David Allen
Field Guide to Western Birds' Nests
Harrison, Hal H.
Hawks in Flight: The Flight Identification of North American Migrant Raptors [First edition]
Dunne, Pete; Sutton, Clay
The American Ornithologists' Union: The First Century, 1883-1983
Sterling, Keir B. and Marianne G. Ainley; Edited by William E. Davis, Jr. and Byron K. Butler
The Sibley Guide to Bird Life and Behavior
Owls of North America [PB]
Birds of the Texas Panhandle: Their Status, Distribution, and History [PB]
Seyffert, Kenneth D.
The West Virginia Breeding Bird Atlas
Buckelew, Albert R.; Hall, George A.
Barn Owl: Birds of North America species account
Carl D. Marti.
Hummingbirds: Their Life and Behavior. A photographic Study of the North American species
Tyrrell, Esther Q.; Tyrrell, Robert A.