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  1. Birds as a factor in controlling insect depredations /
    By: Cottam, Clarence, - Uhler, F. M - U.S. Fish and Wildlife Service.
    Publication info: Washington, D.C. :U.S. Dept. of the Interior, Fish and Wildlife Service,1940.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Beneficial birds  Biological control  Insect pests  United States  
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  2. Birds as a factor in controlling insect depredations /
    By: Cottam, Clarence, - Uhler, F. M. - U.S. Fish and Wildlife Service.
    Edition: Rev.
    Publication info: Chicago, Illinois :U.S. Dept. of the Interior, Fish and Wildlife Service,1942.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Beneficial birds  Biological control  Insect pests  United States  
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  3. Birds of a Maryland farm : a local study of economic ornithology /
    By: Judd, Sylvester Dwight,
    Publication info: Washington ;G.P.O.,1902.
    Contributed by: Cornell University Library
    Subjects: Beneficial birds  Bird pests  Birds  Maryland  
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  4. Birds of a Maryland farm : a local study of economic ornithology /
    By: Judd, Sylvester D.
    Publication info: Washington :U.S. Dept. of Agriculture, Division of Biological Survey,1902.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Beneficial birds  Birds  Maryland  
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  5. Birds useful and birds harmful, by Ottó Herman ... and J. A. Owen.
    By: Herman, Ottó, - Visger, Jean Allan (Pinder) Owen,
    Publication info: Manchester,University press,1909.
    Contributed by: University of California Libraries (archive.org)
    Subjects: Beneficial birds  Bird pests  
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  6. The common hawks and owls of California from the standpoint of the rancher /
    By: Dixon, Joseph S.
    Publication info: Berkeley, Calif. :University of California, College of Agriculture, Agricultural Experiment Station,1922.
    Contributed by: University of California, Davis Libraries (archive.org)
    Subjects: Agricultural pests  Beneficial birds  Bird pests  California  Hawks  Owls  
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  7. The economic value of birds to the state,
    By: Chapman, Frank M. - Fuertes, Louis Agassiz,
    Publication info: Albany,J. B. Lyon Company, Printers,1903.
    Contributed by: Cornell University Library
    Subjects: Beneficial birds  Bird pests  New York (State)  
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  8. A list of the insectivorous birds of New South Wales / by Alfred J. North.
    By: North, Alfred J.
    Publication info: Sydney :Charles Potter [etc.], Govt. Printer,1896-1897.
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
    Subjects: Australia  Beneficial birds  Birds  New South Wales  
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
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  9. Ministers of agriculture give views on bird protection
    By: Canada.
    Publication info: Ottawa? :s.n.,1920?
    Contributed by: Canadiana.org (archive.org)
    Subjects: Beneficial birds  Birds  Canada  Conservation  
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  10. Les oiseaux insectivores et les arbres d'ornement et forestiers par l'abbé Provancher.
    By: Provancher, L.,
    Publication info: [Quebec? :s.n.],1874
    Contributed by: Canadiana.org (archive.org)
    Subjects: Beneficial birds  Birds  Diseases and pests  Food  Trees  
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  11. Some useful Australian birds / Walter W. Froggatt.
    By: Froggatt, Walter W. - New South Wales.
    Publication info: Sydney :W.A. Gullick, Govt. Printer,1921.
    Contributed by: American Museum of Natural History Library
    Subjects: Australia  Beneficial birds  Birds  
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  12. Useful birds and their protection : containing brief descriptions of the more common and useful species of Massachusetts, with accounts of their food habits, and a chapter on the means of attracting and protecting birds / by Edward Howe Forbush ; illustrated by the author, C. Allan Lyford, Chester A. Reed, and others.
    By: Forbush, Edward Howe, - Massachusetts.
    Publication info: Boston :Published under direction of the Massachusetts State Board of Agriculture, by authority of the Legislature,[1907].
    Contributed by: University of California Libraries (archive.org)
    Subjects: Beneficial birds  Birds  Birds, Protection of  Massachusetts  Zoology, Economic  
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