American Bird Conservancy's field guide all the birds of North America

The Wildlife Gardener's Guide to Hummingbirds and Songbirds from the Tropics (Cornell Bird Library Guide)

All the Birds of North America (American Bird Conservancy's Field Guide)

All the Waterbirds: Atlantic and Gulf Coast

All the Waterbirds: Freshwater

All the Waterbirds: Pacific Coast

All the Backyard Birds

American Bird Conservancy Guide to All the Birds of North America