Birds of the Rocky Mountains : with particular reference to national parks in the northern Rocky Mountain region /

Birds of the central Rockies /
by: Wassink, Jan L.
Published: (1991)

Bird guide : land birds east of the Rockies /
by: Reed, Chester A. (Chester Albert), 1876-1912
Published: (1951)

Birds of the Great Plains : breeding species and their distribution /
by: Johnsgard, Paul A.
Published: (1979)

Conservation and management of neotropical migrant landbirds in the Northern Rockies and Great Plains /
by: Dobkin, David S.
Published: (1994)

Prairie birds : fragile splendor in the Great Plains /
by: Johnsgard, Paul A.
Published: (2001)

Birds of the Pacific coast : including a brief account of the distribution and habitat of one hundred and eighteen birds that are more or less common to the Pacific coast states and British Columbia, many of which are found eastward to the Rocky mountains and beyond /
by: Eliot, Willard Ayres, 1871-1961
Published: (1923)

Western bird guide ; birds of the Rockies and west to the Pacific /
by: Reed, Charles K. (Charles Keller), 1851-1921
Published: (1923)

Birds of the Blue Ridge Mountains : a guide for the Blue Ridge Parkway, Great Smoky Mountains, Shenandoah National Park, and neighboring areas /
by: Simpson, Marcus B., Jr
Published: (1992)

Birds over America /
by: Peterson, Roger Tory, 1908-1996
Published: (1948)

An album of Southern birds /
by: Grimes, S. A. (Samuel Andrew), 1906-
Published: (1953)

Common birds of Olympic National Park /
by: Wilhelm, Eugene J.
Published: (1961)

Finding birds in the national capital area /
by: Wilds, Claudia P.
Published: (1992)

Birds of the South ; permanent and winter birds commonly found in gardens, fields, and woods /
by: Green, Charlotte Hilton
Published: (1933)

A guide to bird finding east of the Mississippi /
by: Pettingill, Olin Sewall, 1907-2001
Published: (1980)

A guide to bird finding east of the Mississippi /
by: Pettingill, Olin Sewall, 1907-2001
Published: (1977)

Birds of the northwestern national parks : a birder's persective /
by: Wauer, Roland H.
Published: (2000)

A field key to our common birds /
by: Rorimer, Irene Turk
Published: (1940)

Eastern birds /
by: Farrand, John
Published: (1988)

Birding the Southwestern national parks /
by: Wauer, Roland H.
Published: (2004)

Finding birds in the national capital area /
by: Wilds, Claudia P.
Published: (1983)

Birds of the Midwest : classified by color and habit /
by: Lange, D. (Dietrich), 1863-1940
Published: (1939)

Birds of the Great Basin : a natural history /
by: Ryser, Fred A., Jr., 1920-2011
Published: (1985)

Birds of Eastern North America : a photographic guide /
by: Sterry, Paul
Published: (2009)

Introduction to western birds /
by: Paca, Lillian Grace, 1883-
Published: (1953)

The birds of New England /
by: Samuels, Edward Augustus, 1836-1908
Published: (1870)

Birds of the West /
by: Booth, Ernest S. (Ernest Sheldon)
Published: (1971)

Field book of eastern birds /
by: Hausman, Leon Augustus, 1888-1966
Published: (1946)

Forest habitat for birds of the Northeast /
Published: (1980)

Birds of Yellowstone National Park : a descriptive checklist of the birds of Yellowstone with helpful illustrations /
by: Brodrick, Harold J.
Published: (1952)

A guide to the birds of the southeastern states : Florida, Georgia, Alabama, and Mississippi /
by: Rappole, John H.
Published: (2006)

A distributional list of the birds of Montana : with notes on the migration and nesting of the better known species /
by: Saunders, Aretas A. (Aretas Andrews), 1884-1970
Published: (1921)

Marine birds of the southeastern United States and Gulf of Mexico /
Published: (1982)

Birds of field and shore : grassland and shoreline birds of eastern North America /
by: Eastman, John (John Andrew)
Published: (2000)

Birds of the Southwest : Arizona, New Mexico, southern California & southern Nevada /
by: Rappole, John H.
Published: (2000)

The birds of Nevada /
by: Linsdale, Jean M. (Jean Myron), 1902-1969
Published: (1936)

Watchable birds of the Southwest /
by: Young, Mary Taylor, 1955-
Published: (1995)