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

Bull, John L.
New York : Knopf : distributed by Random House, [1977]

The Audubon Society field guide to North American birds--western region

Udvardy, Miklos D. F., 1919-1998.
New York : Knopf : distributed by Random House, [1977]

Bird feathers : a guide to North American species

Scott, S. David (Shannon David), 1980-
Mechanicsburg, PA : Stackpole Books, [2010]
1st ed.

Birds of North America

London ; New York : DK, 2009.
1st American ed.

Ducks of North America and the northern hemisphere

Gooders, John.
New York, N.Y. : Facts on File, [1986]

Field guide to the birds of North America.

Washington, D.C. : National Geographic Society, 1987.
2nd ed.

A field guide to the nests, eggs, and nestlings of North American birds

Harrison, Colin James Oliver.
New York : Quadrangle/New York Times Book Co., [1976]

Peterson field guide to birds of North America

Peterson, Roger Tory, 1908-1996.
Boston : Houghton Mifflin Co., 2008.
1st ed.

The Sibley field guide to birds of eastern North America

Sibley, David, 1961-
New York : Alfred A. Knopf, [2003]
1st ed.

The Sibley field guide to birds of western North America

Sibley, David, 1961-
New York : Knopf, 2003.
1st ed.

The Sibley guide to birds

Sibley, David, 1961-
New York : Alfred A. Knopf, [2000]
1st ed.