Birds (Smithsonian nature guide)

The scientific wonder of birds

The birds of the wetlands

Birds

Birds

Watching birds : an introduction to ornithology

Eyewitness: Bird

Sibley's birding basics

National Audubon Society Sibley Master guide to birds : field identification

National Geographic Complete Birds of the World

National Geographic birding essentials : all the tools, techniques, and tips you need to begin and become a better birder

Bird

Bird

Stokes field guide to birds. Eastern region

Sibley field guide to birds of eastern North America

Birds of Pennsylvania

Stokes field guide to birds: Western region

Field guide to the birds of North America

All the backyard birds. East

The Audubon Society field guide to North American birds, eastern region

National Geographic field guide to birds. Pennsylvania

National Geographic field guide to the birds of North America

Birds of North America: East

Birds of North America. Eastern region : a quick identification guide to common birds

Field guide to the birds of North America

National Geographic pocket guide to the birds of North America

Crinkleroot's guide to knowing the birds

Backyard birds

Bizarre birds

The atlas of amazing birds

Crinkleroot's 25 birds every child should know

Birds of North America

A birdkeeper's guide to pet birds : a practical introduction to maintaining and enjoying a wide range of pet birds in the home

Bird watcher

The bird feeder guide : how to attract and identify birds in your garden

Birds of Pennsylvania field guide

Birds of North America: Eastern region

Birds of North America : Eastern region

A field guide to birds' nests of 285 species found breeding in the United States east of the Mississippi River

Birds of the Mid-Atlantic

Birds of the Mid-Atlantic region and where to find them