Over 320 common and interesting species of birds found in the Rocky Mountains region are brought to life by colorful illustrations and detailed descriptive text

Rocky Mountain National Park is a destination for birders from around the world. No other locale offers such ready access to the pristine high-elevation habitat

Birds most often sighted in the Rocky Mountains.

"This comprehensive reference work . . . describes in detail 354 species found in a 353,000 square mile area, from the 40th parallel in Colorado north to the 52

"Part I outlines the habitats, ecology, and bird geography of the Rocky Mountains north of the New Mexico-Colorado border, including recent changes in the ecolo