Finding Birds in Southeast Arizona, 8th Edition [REVISED]
Tucson Audubon Society Publications Committee
Peterson Field Guides: The Young Birder's Guide to Birds of North America
Thompson, Bill III
Bats of the United States and Canada
HARVEY, Michael J.; ALTENBACH, J. Scott; BEST, Troy L.
The Armchair Birder Goes Coastal: The Secret Lives of Birds of the Southeastern Shore
Birding Trails Texas: Panhandle; Prairies & Pineywoods
Small Mountain Owls
Hawks and Owls of Eastern North America, Second edition
Earley, Chris G.