Birds of Colorado

The Insect Crisis: The Fall of the Tiny Empires That Run the World

Birds of Alaska

The Mind of a Bee

Birds of Florida

The Thinking Beekeeper: A Guide to Natural Beekeeping in Top Bar Hives

Birds of North Carolina

A Book of Bees

Birds of South Carolina

Spiders of North America

Butterflies & Moths

Top-Bar Beekeeping: Organic Practices for Honeybee Health

Backyard Wildlife

Natural Beekeeping: Organic Approaches to Modern Apiculture

Birds of Prey

The Worm Farmer's Handbook: Mid- to Large-Scale Vermicomposting for Farms, Businesses, Municipalities, Schools, and Institutions

Colorado Wildlife

Bugs in Origami

Mushrooms: A Falcon Field Guide, Edition 2

Spiders of Southern Africa: Edition 2