Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         ["Animale Regnum" 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 "Strix" nom. inval.] see Genus Strix Linnaeus, 1758
               2 [Genus "Falco" nom. inval.] see Genus Falco Linnaeus, 1758
               3 [Genus "Psittacus" nom. inval.] see Genus Psittacus Linnaeus, 1758