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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Bennun, Leon A. - Frere, Patrick J. - Squelch, P
    Type: Article
    In: Scopus
    Volume: 14
    Date: 1990
    Page Range: 29--30
    Publication Info: Nairobi, East Africa Natural History Society's Ornithological Sub-committee,
  2. By: Frere, Patrick J.
    Type: Article
    In: Scopus
    Volume: 8
    Date: 1984
    Page Range: 48--48
    Publication Info: Nairobi, East Africa Natural History Society's Ornithological Sub-committee,