British birds (1921)

British birds (1920)

British birds (1922)

British birds (1924)

British birds (1925)

British birds (1926)

British birds (1927)

British birds (1928)

British birds (1929)

British birds (1930)

British birds (1931)

British birds (1932)

British birds (1933)

British birds (1934)

British birds (1935)

British birds (1936)

British birds (1937)

British birds (1938)

British birds (1939)

British birds (1940)

British birds (1941)

British birds (1942)

British birds (1943)

British birds (1944)

British birds (1947)

British birds (1948)

British birds (1949)

British birds (1950)

British birds (1951)

British birds (1952)

British birds (1953)

British birds (1954)

British birds (1955)

British birds (1956)

British birds (1957)

British birds (1958)

British birds (1959)

British birds (1960)

British birds (1961)

British birds (1962)

British birds (1963)

British birds (1964)

British birds (1965)

British birds (1986)

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

British birds : descriptions of all the commoner species, their nests and eggs - Kirkman, F. B. (Frederick B.), 1869 -1945 (T.C. & E. Jack, 1900)

British birds : descriptions of all the commoner species, their nests, and eggs - Kirkman, F. B. (Frederick B.), 1869 -1945 (T.C. & E.C. Jack, 1913)

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

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' nests, how, where, and when to find and identify them - Kearton, Richard, 1862 -1928 (Cassell and Company, Limited, 1908)

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

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

The British nature book; a complete handbook and guide to British nature study, embracing the mammals, birds, reptiles, fish, insects, plants, etc., in the United Kingdom - Sedgwick, Sidney Newman. (T.C. & E.C. Jack, Ltd, 1922)

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)

Buceros : ENVIS newsletter : avian ecology and inland wetlands - Bombay Natural History Society. (Bombay Natural History Society, 2004)

Buceros : ENVIS newsletter : avian ecology and inland wetlands - Bombay Natural History Society. (Bombay Natural History Society, 2015)

Buceros : ENVIS newsletter : avian ecology and inland wetlands - Bombay Natural History Society. (Bombay Natural History Society, 2017)

Budapest és környéke természetrajzi, orvosi és közmivelődési leirása : Budapest főváros : a magyar orvosok és természetvizsgálók XX. nagy-gyülésére emlékül - Dulácska, Géza, (Nyomatott a Magyar Királyi Egyetemi Könyvnyomdában, 1879)

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

Buletinul Societății de Șciințe din Bucureșci, România = Bulletin de la Société des sciences de Bucarest, Roumanie - Societatea de Științe din București. (Societatea, 1911)

Bullet and shot in Indian forest, plain and hill. With hints to beginners in Indian shooting - Russell, Charles Edward Mackintosh. (W. Thacker and Co, 1900)

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

Bulletin - Natural History Society of Maryland (The Society, 1938)

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

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

Bulletin - United States National Museum (G.P.O, 1909)

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

Bulletin - Société d'Étude des Sciences Naturelles de Béziers. (1896)

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

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, 1923)

Bulletin - United States National Museum (G.P.O, 1938)

Bulletin - United States National Museum (G.P.O, 1958)

Bulletin - United States National Museum (G.P.O, 1960)

Bulletin - National Museum of Canada. (National Museum of Canada, 1946)

Bulletin - National Museum of Canada. (National Museum of Canada, 1959)

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

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

Bulletin - National Museum of Canada. (National Museum of Canada, 1952)