Systema naturæ - nature
   Universum - universe see [unranked] Mundus Plinius
     naturalia - natural bodies
       Regnum Animale nom. inval. - animal kingdom see Kingdom Animalia Linnaeus, 1758
         Class Aves Plinius, nom. inval. - birds see Class Aves Linnaeus, 1758
           Order Accipitres Plinius, nom. inval. see Order Accipitres Linnaeus, 1758
             Genus Falco nom. inval. see Genus Falco Linnaeus, 1758
               01 Aquila Plinius, nom. inval.
               02 Vultur Plinius, nom. inval.
               03 Buteo Plinius, nom. inval.
               04 Falco nom. inval.
               05 Cyanopus nom. inval.
               06 Milvus Plinius, nom. inval.
               07 Lanius nom. inval.
               08 Pygargus nom. inval.
               09 Nisus nom. inval.
               10 Tinnunculus nom. inval.