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  1. By: Cocker, Mark
    Type: Article
    In: Bulletin of the African Bird Club
    Volume: 7
    Issue: 1
    Date: 2000-03
    Page Range: 60--65
    Publication Info: Cambridge, African Bird Club, 1994-
  2. By: Cocker, Mark
    Type: Article
    In: Bulletin of the African Bird Club
    Volume: 12
    Issue: 1
    Date: 2005-03
    Page Range: 56--62
    Publication Info: Cambridge, African Bird Club, 1994-
  3. By: Cocker, Mark - Mikkola, Heimo
    Type: Article
    In: Bulletin of the African Bird Club
    Volume: 8
    Issue: 1
    Date: 2001-03
    Page Range: 30--35
    Publication Info: Cambridge, African Bird Club, 1994-