The Grizzly Bears of Yellowstone

Craighead, John J., Jay S. Sumner, & John A. Mitchell

Birds of the Pacific Northwest

Shewey, John and Tim Blount

Results of a Biological Reconnoissance of South-Central Idaho

Merriam, C. Hart

The Black Swift in Idaho and Biography of Earl J. Larrison Pacific Northwest Naturalist

Weber, John W.

Birds of Idaho

BURLEIGH, Thomas Dearborn.

Large-Scale Conservation Assessment for Neotropical Migratory Land Birds in the Interior Columbia Ri

Saab, Victoria A.

Western Birds Backyard Guide: Bird Watchers Digest Backyard Guides

Bill Thompson III

Small Mountain Owls

Rashid, Scott