Birds of the Pacific States
Birds of the Rocky Mountains
Johnsgard, Paul A.
Birding Northern California
Field Guide to Birds of the Desert Southwest
The Birder's Guide to Oregon
Evanich, Joseph E., Jr.
Birds of Prey of the West: A Field Guide
Wheeler, Brian K., Text and Illustrations
Birding in the San Juan Islands
Lewis, Mark and Fred Sharpe
A Field Guide to Western Birds, Third Edition
Peterson, Roger Tory
Illustrations by Peterson, Roger Tory
Birds of Southern California: Status and Distribution
Garrett, Kimball and Jon Dunn
Birds of the Great Plains: Breeding Species and Their Distribution
A Guide to Bird Finding West of the Mississippi, Second Edition
Pettingill, Olin Sewall Jr.
Birds of Montana: Field Guide