冠羽




冠羽（かんう）は、一部の鳥や恐竜種の頭部、頸部などに見られる特徴的な長く伸びた羽根。冠羽によって形成される冠状・房状・扇状などの毛束を羽冠という[1]。


オウムなどの羽冠は、自由に上げたり下げたりして仲間とコミュニケーションするほか、敵に対して体を大きく見せかける防御手段に使われる[2]。




目次






  • 1 羽冠の種類


  • 2 ギャラリー


  • 3 出典


  • 4 関連項目





羽冠の種類


recumbentとrecursiveに分類できる[3]。またモモイロインコのように両方の特徴を持つ種もある[2]。


recumbent crest

伏せた状態に出来る冠羽[3]






  • タイハクオウム冠羽を横にした状態







  • 広げた状態





recursive crest

羽を広げてない状態でも目立っており、色も鮮やかな冠羽[2]






  • クルマサカオウム







  • クルマサカオウムの冠羽を広げた状態







  • キバタン







  • キバタンの冠羽を広げた状態






ギャラリー






  • コキサカオウムの冠羽羽根
    (1cm格子見本シート)







  • タゲリ







  • オウギバト







  • マカロニペンギン







  • オカメインコ






出典





  1. ^ ブリタニカ国際大百科事典 小項目事典：羽冠（うかん、crest）（コトバンク）

  2. ^ abcHighfill, Carol. “Those Magnificent Cockatoo Crests”. Cockatoo Heaven. 2013年5月2日閲覧。

  3. ^ abMoustaki, Nikki (2005). Parrots for Dummies (1st ed.). Indianapolis, IN: Wiley Pub. ISBN 978-0764583537




関連項目



  • 鳥類用語#冠羽

  • とさか

  • 上肉垂？（英語版）

  • 肉垂（英語版）




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