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

The birds of the Isle of Pines - Todd, W. E. Clyde (Walter Edmond Clyde), 1874 -1969 (1916)

Birds of the Kansas City region - Harris, Harry, 1878 - (1919)

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)

Birds of the Papago Saguaro National Monument and the neighboring region, Arizona - United States. National Park Service. (Govt. Print. Off, 1920)

Birds of the southern Lesser Antilles - Clark, Austin Hobart, 1880 -1954 (Printed for the Society of Natural History, 1905)

Birds of the vicinity of the University of Indiana - McAtee, W. L. (Waldo Lee) 1883 -1962 (1905)

The birds of the West Indies : including all species known to occur in the Bahama Islands, the Greater Antilles, the Caymans, and the Lesser Antilles, excepting the islands of Tobago and Trinidad - Cory, Charles B. (Charles Barney), 1857 -1921 (Estes & Lauriat, 1889)

Birds of the world for young people - Knight, Charles Robert, 1874 -1953 (F.A. Stokes Company, 1909)

Birds of the world; a popular account - Ridgway, Robert, 1850 -1929 (Holt, 1909)

Birds of village and field: a bird book for beginners - Bailey, Florence Merriam, 1863 -1948 (Houghton, Mifflin and company, 1898)

The birds of Virginia - Bailey, Harold H. (Harold Harris), 1878 -1962 (J. P. Bell Company, Inc, 1913)

The birds of Washington : a complete, scientific and popular account of the 372 species of birds found in the state - Bowles, John Hooper, 1875 -1934 (Occidental Pub. Co, 1909)

Birds of western Canada - Taverner, P. A. (Percy Algernon), 1875 -1947 (King's Printer, 1926)

The birds of Wyoming - Knight, Wilbur C. (Wilbur Clinton), 1858 -1903 (Wyoming Experiment Station], 1902)

The birds of Wyoming - Knight, Wilbur C. (Wilbur Clinton), 1858 -1903 (Wyoming Experiment Station, 1902)

The birds of Wyoming, with an explanation of recent changes in their distribution; economic aspect also considered - Grave, B. H. (Benjamin Harrison), 1878 -1949 (University of Wyoming, 1913)

Birds protected by federal law - U.S. Fish; Wildlife Service (U.S. Dept. of the Interior, Fish and Wildlife Service, 1966)

Birds: the elements of ornithology ; with 174 illustrations whereof 140 are original drawings - Mivart, St. George Jackson, 1827 -1900 (R.H. Porter, 1892)

The blessed birds; or, Highways and byways - Fish, Eldridge Eugene. (O. Ulbrich, 1890)

Boletim biológico (A Sociedade, 1933)

Boletim do Museu Goeldi (Museu Paraense) de Historia Natural e Ethnographia - Museu Goeldi. (Estabelecimento Graphice de C. Wiegandt, 1911)

Boletin de la Academia Nacional de Ciencias en Córdoba, República Argentina - Academia Nacional de Ciencias (Córdoba, Argentina) (Academia Nacional de Ciencias, 1887)

Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn - Zoologisches Forschungsinstitut und Museum Alexander Koenig. (Das Forschungsinstitut, 1950)

Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn - Zoologisches Forschungsinstitut und Museum Alexander Koenig. (Das Forschungsinstitut, 1953)

Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn - Zoologisches Forschungsinstitut und Museum Alexander Koenig. (Das Forschungsinstitut, 1956)

Bonner zoologische Monographien (Zoologisches Forschungsinstitut und Museum Alexander Koenig, 1975)

The breeding birds of Pennsylvania - Harlow, Richard Cresson. (1913)

Breviora - Harvard University. Museum of Comparative Zoology. (Museum of Comparative Zoology, Harvard University, 1973)

Brigham Young University science bulletin. Biological series - Brigham Young University. (Brigham Young University, 1963)

Brigham Young University science bulletin. Biological series - Brigham Young University. (Brigham Young University, 1973)

British birds (1980)

British birds (2007)

British birds (2010)

British Ornithologists' Club occasional publications - British Ornithologists' Club. (British Ornithologists' Club, 1999)

Bulletin - Ridgway Ornithological Club. (American field, 1887)

Bulletin - Colorado Agricultural Experiment Station (Colorado State University Experiment Station, 1897)

Bulletin - Colorado Agricultural Experiment Station (Colorado State University Experiment Station, 1898)

Bulletin - National Museum of Canada. (National Museum of Canada, 1926)

Bulletin - United States National Museum (G.P.O, 1921)

Bulletin - United States National Museum (G.P.O, 1926)

Bulletin - United States National Museum (G.P.O, 1931)

Bulletin - United States National Museum (G.P.O, 1942)

Bulletin - United States National Museum (G.P.O, 1946)

Bulletin - United States National Museum (G.P.O, 1947)

Bulletin - United States National Museum (G.P.O, 1961)

Bulletin - United States National Museum (G.P.O, 1963)

Bulletin - Biological Survey - United States. Bureau of Biological Survey. (Govt. print. off, 1911)

Bulletin du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Imprimerie nationale, 1910)

Bulletin du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Imprimerie nationale, 1932)

Bulletin du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Imprimerie nationale, 1939)

Bulletin du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Imprimerie nationale, 1959)

Bulletin du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Imprimerie nationale, 1962)

Bulletin from the laboratories of natural history of the State University of Iowa - University of Iowa. (The University, 1895)

Bulletin of Carnegie Museum of Natural History - Carnegie Museum of Natural History (Carnegie Museum of Natural History, 1994)

Bulletin of the American Museum of Natural History - Allen, J. A. (Joel Asaph), 1838 -1921 (American Museum of Natural History, 1893)

Bulletin of the American Museum of Natural History - Allen, J. A. (Joel Asaph), 1838 -1921 (American Museum of Natural History, 1894)

Bulletin of the American Museum of Natural History - Allen, J. A. (Joel Asaph), 1838 -1921 (American Museum of Natural History, 1905)

Bulletin of the American Museum of Natural History - Allen, J. A. (Joel Asaph), 1838 -1921 (American Museum of Natural History, 1908)

Bulletin of the American Museum of Natural History - Allen, J. A. (Joel Asaph), 1838 -1921 (American Museum of Natural History, 1917)

Bulletin of the British Museum (Natural History) Zoology - British Museum (Natural History) (BM(NH), 1988)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1892)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1905)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1971)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1973)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1976)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1978)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1980)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1981)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1984)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1985)