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オオタカ識別マニュアル 改訂版...Klem 1999; Ferguson-Lees and Christie 2001, 2005,Dickinson and Remsen 2013; del Hoyo and Collar 2014)。 オオタカは,一般に北方の亜種ほど淡色で大きく南方の亜種ほど暗色で小さい傾向がある。日本産の亜種オオタカ
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