A quick and easy-to-use, lightweight, durable, all-weather field guide to the remarkable and varied birdlife inhabiting the northern Rocky Mountains region within the US states of Wyoming, Montana, and Idaho, in addition to the adjacent Canadian provinces of British Colombia and Alberta. Stunning digital photographs depict 125 species of common and notable birds, enabling users to identify nearly every commonly occurring bird and regional specialty they encounter—day or night—within the guide’s remarkable area of coverage. Aimed at beginning and intermediate birders, the guide will easily fit into any daypack, pocket or glove compartment, facilitating spontaneous and easy field identification—whether in a backyard, on a family vacation, or on a serious birding trip to the best birding hot spots within Wyoming’s Yellowstone N.P., Montana’s Glacier N.P., Idaho’s myriad national forests, or Canada’s Jasper N.P and beyond, all within the beautiful northern Rocky Mountains region.