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
               [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.]