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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Whitehead, Lieut C H T
    Type: Article
    In: Ibis
    Volume: 3
    Series: 9
    Issue: 4
    Date: 1909
    Page Range: 620--623
    Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,
  2. By: Whitehead, Lieut C H T
    Type: Article
    In: Ibis
    Volume: 3
    Series: 9
    Issue: 1
    Date: 1909
    Page Range: 90--134
    Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,