British birds (1995)

British birds (1996)

British birds (1997)

British birds (1998)

British birds (1999)

British birds (2002)

British birds (2003)

British birds (2005)

British birds (2006)

British birds (2008)

British birds (2010)

British birds (2011)

British birds (2012)

British birds (2014)

British birds (2015)

British birds (2016)

British birds (1994)

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

Bulletin - Essex County Ornithological Club of Massachusetts. (1919)

Bulletin - Essex County Ornithological Club of Massachusetts. (1920)

Bulletin - New York State Museum. (University of the State of New York, 1951)

Bulletin - Essex County Ornithological Club of Massachusetts. (1921)

Bulletin - Natural History Society of Maryland (The Society, 1936)

Bulletin - Essex County Ornithological Club of Massachusetts. (1922)

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

Bulletin - Essex County Ornithological Club of Massachusetts. (1923)

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

Bulletin - Essex County Ornithological Club of Massachusetts. (1924)

Bulletin - Essex County Ornithological Club of Massachusetts. (1925)

Bulletin - Essex County Ornithological Club of Massachusetts. (1926)

Bulletin - Essex County Ornithological Club of Massachusetts. (1927)

Bulletin - Essex County Ornithological Club of Massachusetts. (1928)

Bulletin - Essex County Ornithological Club of Massachusetts. (1929)

Bulletin - Essex County Ornithological Club of Massachusetts. (1930)

Bulletin - Essex County Ornithological Club of Massachusetts. (1931)

Bulletin - Essex County Ornithological Club of Massachusetts. (1932)

Bulletin - Essex County Ornithological Club of Massachusetts. (1933)

Bulletin - Essex County Ornithological Club of Massachusetts. (1934)

Bulletin - Essex County Ornithological Club of Massachusetts. (1935)

Bulletin - Essex County Ornithological Club of Massachusetts. (1936)

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

Bulletin - National Museum of Canada. (National Museum of Canada, 1934)

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

Bulletin - United States National Museum (G.P.O, 1953)

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

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

Bulletin - National Museum of Canada. (National Museum of Canada, 1948)

Bulletin - Essex County Ornithological Club of Massachusetts. (1937)

Bulletin - National Museum of Canada. (National Museum of Canada, 1953)

Bulletin - National Museum of Canada. (National Museum of Canada, 1954)

Bulletin - Biological Survey - United States. Bureau of Biological Survey. (Govt. print. off, 1888)

Bulletin - Biological Survey - United States. Bureau of Biological Survey. (Govt. print. off, 1900)

Bulletin - Biological Survey - United States. Bureau of Biological Survey. (Govt. print. off, 1908)

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

Bulletin des sciences - Société Philomathique de Paris. (Fuchs, 1811)

Bulletin du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Imprimerie nationale, 1909)

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

Bulletin - Illinois. Natural History Survey Division (State of Illinois, Dept. of Registration and Education, Natural History Survey Division, 1921)

Bulletin - Illinois. Natural History Survey Division (State of Illinois, Dept. of Registration and Education, Natural History Survey Division, 1930)

Bulletin - Illinois. Natural History Survey Division (State of Illinois, Dept. of Registration and Education, Natural History Survey Division, 1961)

Bulletin of Carnegie Museum of Natural History - Carnegie Museum of Natural History (Carnegie Museum of Natural History, 1978)

Bulletin of the African Bird Club - African Bird Club. (African Bird Club, 2009)

Bulletin of the African Bird Club - African Bird Club. (African Bird Club, 2010)

Bulletin of the African Bird Club - African Bird Club. (African Bird Club, 2011)

Bulletin of the African Bird Club - African Bird Club. (African Bird Club, 2013)

Bulletin of the American Iris Society - American Iris Society. (American Iris Society, 1953)

Bulletin of the American Iris Society - American Iris Society. (American Iris Society, 1967)

Bulletin of the Bird Club of Princeton University - Scott, William Earl Dodge, 1852 -1910 (The Club, 1901)