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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Gätke, Herr H - Bendire, C E - Graham, William,
    Type: Article
    In: Ibis
    Volume: 3
    Series: 7
    Issue: 2
    Date: 1897
    Page Range: 291--296
    Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,