Featuring more than 1,200 color images, illustrations, and range maps, a compact reference identifies and describes every species of wild mammal found north of

This compact, comprehensive field reference treats every species of wild mammal found north of the Mexican border--from squirrels and chipmunks to grizzly bears

A comprehensive guide to the insects of North America contains information--including life histories, behaviors, and habitats--on every major group of insects f

This fourth edition has been completely rewritten, with all-new range maps and illustrations for all species.

The only field guide for identifying the birds, mammals, trees, wildflowers, insects, reptiles, amphibians, fishes, spiders, mushrooms, ferns, grasses, and sky