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  1. By: Fjeldså, Jon - Mayr, Gerald - Jønsson, Knud A - Irestedt, Martin
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 133
    Issue: 1
    Date: 2013
    Page Range: 72--75
    Publication Info: London, British Ornithologists' Club, 1893-
  2. By: Marki, Petter Z - Sam, Katerina - Koane, Bonny - Kristensen, Jan Bolding - Kennedy, Jonathan D - Jønsson, Knud A
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 136
    Issue: 4
    Date: 2016
    Page Range: 263--271
    Publication Info: London, British Ornithologists' Club, 1893-
  3. By: Reeve, Andrew Hart - Haryoko, Tri - Poulsen, Michael Koie - Fabre, Pierre-Henri, - Jønsson, Knud A
    Type: Article
    In: Forktail
    Volume: 30
    Date: 2014
    Page Range: 10--22
    Publication Info: Oxford,