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  1. By: Ryall, C
    Type: Article
    In: Scopus
    Volume: 15
    Date: 1992
    Page Range: 84--92
    Publication Info: Nairobi, East Africa Natural History Society's Ornithological Sub-committee,
  2. By: Ryall, C
    Type: Article
    In: Scopus
    Volume: 14
    Date: 1990
    Page Range: 14--16
    Publication Info: Nairobi, East Africa Natural History Society's Ornithological Sub-committee,
  3. By: Ryall, C
    Type: Article
    In: Scopus
    Volume: 16
    Date: 1992
    Page Range: 1--8
    Publication Info: Nairobi, East Africa Natural History Society's Ornithological Sub-committee,