Sibley Birds West: Field Guide to Birds of Western North America (Sibley Guides)

Sibley's Birding Basics: How to Identify Birds, Using the Clues in Feathers, Habitats, Behaviors, and Sounds (Sibley Guides)

The Sibley Field Guide to Birds of Eastern North America: Second Edition (Sibley Guides)

The Sibley Guide to Birds, 2nd Edition (Sibley Guides)

National Geographic Field Guide to the Birds of Western North America

Peterson Field Guide to Western Reptiles & Amphibians, Fourth Edition (Peterson Field Guides)

Peterson Field Guide to Birds of Western North America, Fourth Edition (Peterson Field Guides)

National Geographic Field Guide to the Birds of North America, 7th Edition

The Sibley Birder's Life List and Field Diary (Sibley Birds)

Sibley Backyard Birding Flashcards: 100 Common Birds of Eastern and Western North America (Sibley Birds)

What It's Like to Be a Bird: From Flying to Nesting, Eating to Singing--What Birds Are Doing, and Why (Sibley Guides)