This set covers more than 250 bird species of the Rocky Mountain states and provinces. This region is home to fascinating bird species such as Trumpeter Swan, Mountain Plover, White-tailed Ptarmigan, Greater Sage-Grouse, Sharp-tailed Grouse, Greater- and Lesser-Prairie Chicken, Williamson's Sapsucker, Three-toed Woodpecker, Cordilleran Flycatcher, and many more.

Contains longer examples and more calls than any other guide. An ideal tool for identification and expanding one's repertoire of the birds of the Rocky Mountain territories. 3 CDs