Camps and Cruises of an Ornithologist
Chapman, Frank M.
Field Guide to Western Birds' Nests
Harrison, Hal H.
Look at That Bird! A Young Naturalist's Guide to Pacific Northwest Birding
Nesting Birds of the Black Forest, Colorado
The Condor. Fiftieth Anniversary Volume
The Western Bird Watcher: An Introduction to Birding in the American West
Zimmer, Kevin J.
Peterson Field Guide to Birds of Western North America, Fifth Edition (Includes Hawaii)
Peterson, Roger Tory
Birds of the Pacific Northwest: A Photographic Guide. Second edition
Aversa, Tom, Richard Cannings and Hal Opperman
Raptors of the West Captured in Photographs [Scratch & Dent]
Backyard Birds Flash Cards: Eastern & Central North America
Cornell Lab of Ornithology
Birds of Prey of the West: Field Guide
The Birds of California. A Complete, Scientific and Popular Account of the 580 Species & Subspecies
DAWSON, William Leon