Book excerpt: Revised, updated, and with more than 80 new color photographs, Rocky Mountain Mammals, Third Edition is a nontechnical guide to the mammals of the Southern Rocky Mountains and their foothills, with special emphasis on Rocky Mountain National Park and vicinity. Designed for quick reference and enjoyable reading, Rocky Mountain Mammals offers what most field guides don't - a wealth of fascinating information about each species. In seventy-two species accounts, David M. Armstrong describes each animal and its signs, habits, habitat, and natural history, noting times when seasonal events such as elk sparring occur. Introductory materials and appendices offer rich context and wildlife-watching support, including a checklist with page numbers for quick field reference, an identification key, a glossary, derivations of scientific names, and advice on how, when, and where to watch mammals. Armstrong introduces mammalian evolution, anatomy, and distribution and offers perspective on how the local fauna fits into its geographical setting and into past and potential future faunas of the region. This lavishly illustrated new edition will delight those who live in and visit the high country and foothills of the Southern Rockies and want to identify mammals and learn about their lives. Published in association with the Rocky Mountain Nature Association.