Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1899)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1909)

Iconographic encyclopaedia of science, literature, and art - Baird, Spencer Fullerton, 1823 -1887 (R. Garrigue, 1851)

Iheringia. Série zoologia - Fundação Zoobotânica do Rio Grande do Sul. Museu de Ciências Naturais. (Museu Rio-Grandense de Ciências Naturais, Divisão de Ciências do Departamento de Ciência e Cultura, Secretaria de Estado dos Negócios da Educação e Cultura do Govêrno do Estado do Rio Grande do Sul, 1978)

Iheringia. Série zoologia - Fundação Zoobotânica do Rio Grande do Sul. Museu de Ciências Naturais. (Museu Rio-Grandense de Ciências Naturais, Divisão de Ciências do Departamento de Ciência e Cultura, Secretaria de Estado dos Negócios da Educação e Cultura do Govêrno do Estado do Rio Grande do Sul, 1981)

Iheringia. Série zoologia - Fundação Zoobotânica do Rio Grande do Sul. Museu de Ciências Naturais. (Museu Rio-Grandense de Ciências Naturais, Divisão de Ciências do Departamento de Ciência e Cultura, Secretaria de Estado dos Negócios da Educação e Cultura do Govêrno do Estado do Rio Grande do Sul, 1990)

Iheringia. Série zoologia - Fundação Zoobotânica do Rio Grande do Sul. Museu de Ciências Naturais. (Museu Rio-Grandense de Ciências Naturais, Divisão de Ciências do Departamento de Ciência e Cultura, Secretaria de Estado dos Negócios da Educação e Cultura do Govêrno do Estado do Rio Grande do Sul, 1994)

Iheringia. Série zoologia - Fundação Zoobotânica do Rio Grande do Sul. Museu de Ciências Naturais. (Museu Rio-Grandense de Ciências Naturais, Divisão de Ciências do Departamento de Ciência e Cultura, Secretaria de Estado dos Negócios da Educação e Cultura do Govêrno do Estado do Rio Grande do Sul, 1996)

Iheringia. Série zoologia - Fundação Zoobotânica do Rio Grande do Sul. Museu de Ciências Naturais. (Museu Rio-Grandense de Ciências Naturais, Divisão de Ciências do Departamento de Ciência e Cultura, Secretaria de Estado dos Negócios da Educação e Cultura do Govêrno do Estado do Rio Grande do Sul, 1967)

Iheringia. Série zoologia - Fundação Zoobotânica do Rio Grande do Sul. Museu de Ciências Naturais. (Museu Rio-Grandense de Ciências Naturais, Divisão de Ciências do Departamento de Ciência e Cultura, Secretaria de Estado dos Negócios da Educação e Cultura do Govêrno do Estado do Rio Grande do Sul, 2000)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1952)

The Illinois breeding bird atlas - U.S. Fish; Wildlife Service (Illinois Natural History Survey, 2004)

An illustrated dictionary of scientific terms - Rossiter, William, 1897 (G. P. Putnam's Sons, 1878)

The illustrated natural history - Wood, J. G. (John George), 1827 -1889 (Harper & Bros, 1872)

Illustrated natural history of the animal kingdom, being a systematic and popular description of the habits, structure, and classification of animals from the highest to the lowest forms, with their relations to agriculture, commerce, manufactures, and the arts - Goodrich, Samuel G. (Samuel Griswold), 1793 -1860 (Derby & Jackson, 1865)

Illustrirtes Thierleben. Für Schule und Haus - Dümling, Hermann. (G. Brumder, 1879)

Index animalium; sive, Index nominum quae ab A. D. MDCCLVIII generibus et speeiebus animalium imposita sunt - Sherborn, Charles Davies, 1861 -1942 (e typographio academico, 1801)

Index animalium; sive, Index nominum quae ab A. D. MDCCLVIII generibus et speeiebus animalium imposita sunt - Sherborn, Charles Davies, 1861 -1942 (e typographio academico, 1902)

Insetos do Brasil. Tomo 1 - Lima, Angelo Moreira da Costa, 1887 -1964 (Escola Nacional de Agronomia, 1938)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1913)

Internationale Monatsschrift für Anatomie und Physiologie (G. Thieme [et al.,], 1894)

An introduction to the study of birds; or, The elements of ornithology, on scientific principles. With a particular notice of the birds mentioned in Scripture - Martin, William Charles Linnæus, 1798 -1864 (Religious Tract Society, 1835)

An introduction to the systematic zoology and morphology of vertebrate animals - Macalister, Alexander, 1844 -1919 (Hodges, Foster and Figgis, 1878)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1963)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1977)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1982)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1986)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1991)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1996)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1998)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 2006)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 2011)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 2018)

Birds peculiar to Ceylon - Legge, W. Vincent (William Vincent), 1841 -1918 (Published by the author, 1878)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1826)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1827)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1830)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1832)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1833)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1834)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1836)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1839)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1844)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1847)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1848)

IUCN Directory of Afrotropical Protected Areas (1987)

IUCN Directory of Neotropical Protected Areas (1982)

IUCN Directory of Protected Areas in Oceania (1991)

Jahrbuch der Hamburgischen Wissenschaftlichen Anstalten - Hamburg (Germany). Oberschulbeh. Sektion f Wissenschaftlichen Anstalten. (Lucas Gr & Sillem, 1892)

Jahrbücher des Nassauischen Vereins für Naturkunde - Nassauischer Verein für Naturkunde (J.F. Bergmann, 1904)

Jahresbericht der Naturhistorischen Gesellschaft zu Hannover - Naturhistorische Gesellschaft zu Hannover. (In Commission der Hahnśchen Verlagsbuchhandlung, 1897)

Jenaische Zeitschrift für Naturwissenschaft - Medizinisch-naturwissenschaftliche Gesellschaft zu Jena. (Gustav Fischer [etc.], 1902)

Jenaische Zeitschrift für Naturwissenschaft - Medizinisch-naturwissenschaftliche Gesellschaft zu Jena. (Gustav Fischer [etc.], 1913)

Johannes Müller on certain variations in the vocal organs of the Passeres that have hitherto escaped notice - Müller, Johannes, Physiologist. (Clarendon Press, 1878)

Journal des Museum Godeffroy - Museum Godeffroy. (L. Friederichsen & Co, 1876)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1854)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1853)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1855)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1857)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1858)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1859)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1860)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1861)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1862)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1863)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1864)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1866)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1867)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1869)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1870)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1874)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1875)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1876)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1877)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1878)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1880)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1881)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1882)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1883)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1885)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1886)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1887)

Journal für Ornithologie - Deutsche Ornithologen-Gesellschaft (Friedländer, 1890)