The birds of North and Middle America : a descriptive catalogue of the higher groups, genera, species, and subspecies of birds known to occur in North America, from the Arctic lands to the Isthmus of Panama, the West Indies and other islands of the Caribbean sea, and the Galapagos Archipelago - Ridgway, Robert, 1850 -1929 (Govt. Print. Off, 1914)

Birds of Oregon - Gabrielson, Ira Noel, 1889 -1977 (Pub. by Oregon State College through the O.S.C. Cooperative Association, 1940)

The birds of our country - Stewart, H. E. (Digby, Long & Co, 1898)

The birds of our country - Stewart, H. E. (Digby, Long, 1897)

The birds of Oxfordshire - Aplin, O. V. (Oliver Vernon), 1858 -1940 (Clarendon Press, 1889)

The birds of Siberia; a record of a naturalist's visits to the valley of the Petchora and Yenesei - Seebohm, Henry, 1832 -1895 (J. Murray, 1901)

The birds of Siberia; a record of a naturalist's visits to the valleys of the Petchora and Yenesei - Seebohm, Henry, 1832 -1895 (J. Murray, 1901)

The birds of Singapore Island - Kloss, C. Boden (Cecil Boden), 1877 -1949 (Printed at the Govt. Print. Office by W. T. Cherry, Govt. Printer, 1927)

The birds of South Africa - Sclater, William Lutley, 1863 -1944 (R. H. Porter, 1903)

The birds of South Africa - Sharpe, Richard Bowdler, 1847 -1909 (Bernard Quaritch, 1875)

The birds of South Africa : a descriptive catalogue of all the known species occurring south of the 28th parallel of south latitude - Layard, Edgar Leopold, 1824 -1900 (Juta, 1867)

The birds of South America - Swann, H. Kirke (Harry Kirke), 1871 -1926 (R. H. Porter [etc, 1912)

Birds of South Carolina - Wayne, Arthur Trezevant, 1863 -1930 ([The Daggett Printing Co.], 1910)

The birds of the Assyrian monuments and records - Houghton, W. (William), 1828 -1895 (1884)

The birds of the Bahama Islands : containing many birds new to the Islands, and a number of undescribed winter plumages of North American birds - Cory, Charles B. (Charles Barney), 1857 -1921 (Estes & Lauriat, 1890)

Birds of the Bahama islands; containing many birds new to the islands, and a number of undescribed winter plumages of North American species - Cory, Charles B. (Charles Barney), 1857 -1921 (The author, 1880)

The birds of the Cambridge region of Massachusetts - Brewster, William, 1851 -1919 (The Club, 1906)

The birds of the Chicago area - Woodruff, Frank Morley (Jennings and Graham], 1907)

Birds of the Colorado valley ... scientific and popular information concerning North American ornithology - Coues, Elliott, 1842 -1899 (Gov't print. off, 1878)

Birds of the Colorado valley ... scientific and popular information concerning North American ornithology - Coues, Elliott, 1842 -1899 (Govt. Print. Off, 1878)

Birds of the Humber District - Cordeaux, John. (Van Voorst, 1872)

The birds of the Japanese Empire - Seebohm, Henry, 1832 -1895 (R. H. Porter, 1890)

Birds of the Kelley-Roosevelts expedition to French Indo-China - Bangs, Outram, 1862 -1932 (1931)

Birds of the Marshall Field Peruvian Expedition, 1922-1923 - Zimmer, John T. (John Todd), 1889 -1957 (1930)

Birds of the Northwest: a hand-book of the ornithology of the region drained by the Missouri River and its tributaries - Coues, Elliott, 1842 -1899 (Govt. Print. Off, 1874)