Book excerpt: This field guide dedicated to the wildlife of Rocky Mountain National Park is an information-packed, pocket-sized book that introduces park visitors to animals, plants, insects and more that reside at Rocky Mountain National Park in a colorful and portable package. Includes more than 200 species, including elk, bighorn sheep, moose, ptrarmigan, pika, American dipper, greenback cutthroat trout, aspen, fairy slipper, Colorado columbine, mountain pine beetle, and more.