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
             1 Genus Psittacus nom. inval. see Genus Psittacus Linnaeus, 1758
             2 Genus Strix nom. inval. see Genus Strix Linnaeus, 1758
             3 Genus Falco nom. inval. see Genus Falco Linnaeus, 1758