Rocky Mountain Wildlife pocket guide. The Rocky Mountains straddle the Western Continental Divide and have a range of elevations as well as wet and dry areas, providing a diversity of habitat for wildlife. Rocky Mountain Wildlife is the ideal pocket sized, folding guide for the ecotourist or wilderness expert. This beautifully illustrated guide highlights over 140 familiar species of birds, mammals, reptiles, amphibians, butterflies and fishes. Laminated for durability, this is the guide to take on your next Rocky Mountain adventure.