British birds (2013)

British birds (2014)

British birds (2015)

British birds (2016)

British birds & their eggs : with a new method of identification - Boraston, John Maclair. (W. & R. Chambers, 1909)

British birds and their eggs : with a new method of identification - Boraston, John Maclair. (W. & R. Chambers, 1909)

British birds' eggs: a handbook of British oölogy - Butler, Arthur G. (Arthur Gardiner), 1844 -1925 (Janson, 1886)

British birds' eggs and nests, popularly described - Atkinson, J. C. (John Christopher), 1814 -1900 (G. Routledge, 1898)

British birds in their haunts - Johns, C. A. (Charles Alexander), 1811 -1874 (G. Routledge & Sons, limited, 1909)

British birds: key list - Irby, L. Howard (Leonard Howard Lloyd), 1836 -1905 (R. H. Porter, 1892)

British birds : key list - Irby, L. Howard (Leonard Howard Lloyd), 1836 -1905 (R.H. Porter, 1888)

British birds with their nests and eggs - Frohawk, Frederick William, 1861 -1946 (Brumby & Clarke, 1896)

British birds - Thorburn, Archibald, 1860 -1935 (Longmans, Green, 1915)

British journal of entomology and natural history - British Entomological; Natural History Society. (British Entomological and Natural History Society, 1992)

British journal of entomology and natural history - British Entomological; Natural History Society. (British Entomological and Natural History Society, 1995)

British journal of entomology and natural history - British Entomological; Natural History Society. (British Entomological and Natural History Society, 2001)

British journal of entomology and natural history - British Entomological; Natural History Society. (British Entomological and Natural History Society, 2003)

British journal of entomology and natural history - British Entomological; Natural History Society. (British Entomological and Natural History Society, 2004)

British journal of entomology and natural history - British Entomological; Natural History Society. (British Entomological and Natural History Society, 2005)

British nesting birds : a complete record of every species which nests in the British Isles - Westell, W. Percival (William Percival), 1874 -1943 (J.M. Dent, 1910)

Brockhaus' Konversations-Lexikon (F.A. Brockhaus, 1893)

Buceros : ENVIS newsletter : avian ecology and inland wetlands - Bombay Natural History Society. (Bombay Natural History Society, 1998)

Buceros : ENVIS newsletter : avian ecology and inland wetlands - Bombay Natural History Society. (Bombay Natural History Society, 2001)

Buceros : ENVIS newsletter : avian ecology and inland wetlands - Bombay Natural History Society. (Bombay Natural History Society, 2002)

Buceros : ENVIS newsletter : avian ecology and inland wetlands - Bombay Natural History Society. (Bombay Natural History Society, 2006)

Buletinul Societății de Șciințe din Bucureșci, România = Bulletin de la Société des sciences de Bucarest, Roumanie - Societatea de Științe din București. (Societatea, 1892)

Bulletin - East Africa Natural History Society. (East Africa Natural History Society, 1975)

Bulletin - National Institutes of Health (U.S.) (U.S. Govt. Print. Off, 1907)

Bulletin - Société des amis des sciences naturelles de Rouen. (1889)

Bulletin - Société des amis des sciences naturelles de Rouen. (1891)

Bulletin - Société des amis des sciences naturelles de Rouen. (1896)

Bulletin - United States National Museum (G.P.O, 1927)

Bulletin - United States National Museum (G.P.O, 1968)

Bulletin - National Museum of Canada. (National Museum of Canada, 1950)

Bulletin - National Museum of Canada. (National Museum of Canada, 1967)

Bulletin - Biological Survey - United States. Bureau of Biological Survey. (Govt. print. off, 1906)

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

Bulletin d'écologie - Société Française D'Écologie (Masson, 1973)

Bulletin d'écologie - Société Française D'Écologie (Masson, 1981)

Bulletin de la Société impériale des naturalistes de Moscou - Moskovskoe obshchestvo liubitelei prirody. (Société impériale des naturalistes de Moscou, 1883)

Bulletin de la Société impériale des naturalistes de Moscou - Moskovskoe obshchestvo liubitelei prirody. (Société impériale des naturalistes de Moscou, 1886)

Bulletin de la Société impériale des naturalistes de Moscou - Moskovskoe obshchestvo liubitelei prirody. (Société impériale des naturalistes de Moscou, 1890)

Bulletin de la Société impériale des naturalistes de Moscou - Moskovskoe obshchestvo liubitelei prirody. (Société impériale des naturalistes de Moscou, 1892)

Bulletin de la Société impériale des naturalistes de Moscou - Moskovskoe obshchestvo liubitelei prirody. (Société impériale des naturalistes de Moscou, 1893)

Bulletin de la Société impériale des naturalistes de Moscou - Moskovskoe obshchestvo liubitelei prirody. (Société impériale des naturalistes de Moscou, 1897)

Bulletin de la Société impériale des naturalistes de Moscou - Moskovskoe obshchestvo liubitelei prirody. (Société impériale des naturalistes de Moscou, 1912)

Bulletin de la Société philomathique de Paris - Société Philomathique de Paris. (Société philomathique de Paris, 1882)

Bulletin de la Société zoologique de Genève - Société zoologique de Genève. (Soci zoologique de Gen, 1907)

Bulletin de la Société des sciences naturelles de l'Ouest de la France - Société des sciences naturelles de l'Ouest de la France. (Société des sciences naturelles de l'Ouest de la France [etc.], 1901)

Bulletin de la Société fribourgeoise des sciences naturelles : compte-rendu - Société fribourgeoise des sciences naturelles (Imprimerie Ant. Henseler, 1904)

Bulletin de la Société fribourgeoise des sciences naturelles : compte-rendu - Société fribourgeoise des sciences naturelles (Imprimerie Ant. Henseler, 1908)

Bulletin de la Société fribourgeoise des sciences naturelles : compte-rendu - Société fribourgeoise des sciences naturelles (Imprimerie Ant. Henseler, 1911)

Bulletin de la Société fribourgeoise des sciences naturelles : compte-rendu - Société fribourgeoise des sciences naturelles (Imprimerie Ant. Henseler, 1920)

Bulletin de la Société linnéenne de Normandie - Société linnéenne de Normandie. (The Society, 1899)

Bulletin de la Société nationale d'acclimatation de France - Société nationale d'acclimatation de France (Société nationale d'acclimatation de France, 1913)

Bulletin de la Société zoologique de France - Société zoologique de France. (La Société, 1893)

Bulletin de l'Académie impériale des sciences de St.-Pétersbourg - Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia) (Imprimerie de l'Académie Impériale des Sciences, 1894)

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, 1913)

Bulletin du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Imprimerie nationale, 1925)

Bulletin du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Imprimerie nationale, 1938)

Bulletin du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Imprimerie nationale, 1961)

Bulletin du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Imprimerie nationale, 1964)

Bulletin du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Imprimerie nationale, 1967)

Bulletin du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Imprimerie nationale, 1970)

Bulletin du Musée royal d'histoire naturelle de Belgique = Mededeelingen van het Korinklijk Natuurhistorisch Museum van België - Musée royal d'histoire naturelle de Belgique. (Le Musée, Imprimeur du Roi, 1886)

Bulletin du Muséum national d'histoire naturelle. Série 3, Zoologie - Muséum national d'histoire naturelle (France) (1977)

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

Bulletin - Nigerian Ornithologists' Society - Nigerian Ornithologists' Society. (Ahmadu Bello University Press, 1978)

Bulletin of Carnegie Museum of Natural History - Carnegie Museum of Natural History (Carnegie Museum of Natural History, 1977)

Bulletin of the African Bird Club - African Bird Club. (African Bird Club, 1999)

Bulletin of the African Bird Club - African Bird Club. (African Bird Club, 2005)

Bulletin of the African Bird Club - African Bird Club. (African Bird Club, 2015)

Bulletin of the American Museum of Natural History - Allen, J. A. (Joel Asaph), 1838 -1921 (American Museum of Natural History, 1924)

Bulletin of the British Museum (Natural History) Entomology - British Museum (Natural History) (The Museum, 1952)

Bulletin of the British Museum (Natural History) Zoology - British Museum (Natural History) (BM(NH), 1979)

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, 1899)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1910)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1911)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1913)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1966)

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, 1980)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1995)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 2006)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 2015)

Bulletin of the Brooklyn Entomological Society - Brooklyn Entomological Society (The Society, 1942)

Bulletin of the Museum of Comparative Zoology at Harvard College - Harvard University. Museum of Comparative Zoology. (The Museum, 1949)

Bulletin of the Natural History Society of Maryland - Natural History Society of Maryland (The Society, 1942)

Bulletin of the Nuttall Ornithological Club - Baird, Spencer Fullerton, 1823 -1887 (The Club, 1878)

Bulletin of the Southern California Academy of Sciences - Southern California Academy of Sciences. (The Academy, 1962)

Bulletin of the Southern California Academy of Sciences - Southern California Academy of Sciences. (The Academy, 1964)

Bulletin - Southern California Academy of Sciences. (The Academy, 1991)

Bulletin - Southern California Academy of Sciences. (The Academy, 1994)

Bulletin - Southern California Academy of Sciences. (The Academy, 2006)

Bulletin - Southern California Academy of Sciences. (The Academy, 2009)

Bulletin of the Texas Ornithological Society - Texas Ornithological Society. (Texas Ornithological Society, 2020)

Bulletin of the United States National Museum - United States National Museum (G.P.O, 1885)

Bulletin / Oriental Bird Club - Oriental Bird Club. (the Club, 1986)

Bulletin / Oriental Bird Club - Oriental Bird Club. (the Club, 1990)

Bulletin / Oriental Bird Club - Oriental Bird Club. (the Club, 1997)

Bulletin / Oriental Bird Club - Oriental Bird Club. (the Club, 1998)

Bulletin / Oriental Bird Club - Oriental Bird Club. (the Club, 1999)

Bulletin / Oriental Bird Club - Oriental Bird Club. (the Club, 2000)

Bulletin / Ornithological Society of the Middle East - Ornithological Society of the Middle East. (Ornithological Society of the Middle East, 1981)

Bulletin / Ornithological Society of the Middle East - Ornithological Society of the Middle East. (Ornithological Society of the Middle East, 1984)

Bulletin / Ornithological Society of the Middle East - Ornithological Society of the Middle East. (Ornithological Society of the Middle East, 1986)

Bulletin / Ornithological Society of the Middle East - Ornithological Society of the Middle East. (Ornithological Society of the Middle East, 1988)

Bulletin / Ornithological Society of the Middle East - Ornithological Society of the Middle East. (Ornithological Society of the Middle East, 1989)

Bulletin / Ornithological Society of the Middle East - Ornithological Society of the Middle East. (Ornithological Society of the Middle East, 1991)

Bulletin / Ornithological Society of the Middle East - Ornithological Society of the Middle East. (Ornithological Society of the Middle East, 1993)

Bulletin / Ornithological Society of the Middle East - Ornithological Society of the Middle East. (Ornithological Society of the Middle East, 1994)

Bulletin / Ornithological Society of the Middle East - Ornithological Society of the Middle East. (Ornithological Society of the Middle East, 1995)

Bulletin - Peabody Museum of Natural History. (The Museum, 1972)

California birds - California Field Ornithologists. (California Field Ornithologists, 1970)

California fish and game - California. Division of Fish; Game. (State of California, Resources Agency, Dept. of Fish and Game, 1972)

The Cambridge natural history - Harmer, S. F. (Sidney Frederic), 1862 -1950 (Macmillan and co., limited, 1899)

The Cambridge natural history - Harmer, S. F. (Sidney Frederic), 1862 -1950 (Macmillan and co., limited, 1900)