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  1. 1
    Ruddy ducks & other stifftails : their behavior and biology

    Ruddy ducks & other stifftails : their behavior and biology by Johnsgard, Paul A.

    Norman : University of Oklahoma Press, 2010
    Pbk. ed.
    Format: Book


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  2. 2
    Reproduction, energetics and social structure of the ruddy duck

    Reproduction, energetics and social structure of the ruddy duck by Gray, Betty Jean

    1980
    Format: Thesis Book


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  3. 3
    On certain secondary sexual characters in the male ruddy duck, Erismatura jamaicensis (Gmelin).

    On certain secondary sexual characters in the male ruddy duck, Erismatura jamaicensis (Gmelin). by Wetmore, Alexander, 1886-1978

    Washington, 1917
    Format: Book


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  4. 4
    Ruddy duck : oxyura jamaicensis

    Ruddy duck : oxyura jamaicensis by Brua, Robert Brian, 1965-

    Philadelphia, Pa. : Birds of North America, Inc., 2002
    Format: Book


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  5. 5
    Conclusions and recommendations of the International Technical Meeting on Oxyura Leucocephala and Oxyura Jamaicensis in the Palearctic Region : Cordoba, Andalusia, Spain, 29th and 30th September 1994.

    Conclusions and recommendations of the International Technical Meeting on Oxyura Leucocephala and Oxyura Jamaicensis in the Palearctic Region : Cordoba, Andalusia, Spain, 29th and...

    Cordoba, España : [publisher not identified], 1994
    Format: Conference Proceeding Book


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