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  1. By: Sun, Yuan-Hsun - Wu, Hsin-Ju - Wang, Ying (Ornithologist)
    Type: Article
    In: The journal of raptor research
    Volume: 38
    Issue: 4
    Date: 2004
    Page Range: 326--333
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  2. By: Hong, Shiao-Yu - Sun, Yuan-Hsun - Wu, Hsin-Ju - Chen, Chao-Chieh
    Type: Article
    In: Forktail
    Volume: 29
    Date: 2013
    Page Range: 48--51
    Publication Info: Oxford,
  3. By: Sun, Yuan-Hsun - Chiu, Ming-Chih - Li, Ching-Feng - Liu, Mark - Wu, Hsin-Ju - Chiang, Po-Jen
    Type: Article
    In: Forktail
    Volume: 30
    Date: 2014
    Page Range: 41--44
    Publication Info: Oxford,