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National Geographic field guide to the birds of North America
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National Geographic pocket guide to the birds of North America
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The National Audubon Society birds of North America : the complete guide to birding--with full-color photographs, updated range maps, and authorative notes on voice, behavior, habitat, nesting, and conservation status
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Peterson field guide to birds of North America
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Feed the birds : attract and identify 196 common North American birds
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Peterson field guide to birds of eastern and central North America
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Peterson field guide to birds of Western North America
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Peterson field guide to birds of eastern and central North America
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Field guide to the birds of the United States and Canada
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The kids' guide to birds of Pennsylvania : fun facts, activities, and 88 cool birds
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National Geographic complete birds of North America
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Light as a feather : fifteen phenomenal North American birds
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Second atlas of breeding birds in Pennsylvania
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America's other Audubon
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The field guide to dumb birds of North America
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National Geographic field guide to the birds of North America
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Sibley field guide to birds of eastern North America
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Birding adventures for kids : activities and ideas for watching, feeding, and housing our feathered friends
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Mammals of North America
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Field guide to mammals of North America
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Mammals of North America
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National Audubon Society field guide to North American mammals
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Birdwatcher : the life of Roger Tory Peterson
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The feather detective : mystery, mayhem, and the magnificent life of Roxie Laybourne
