Natura - nature
   Universum - universe see [unranked] Mundus Plinius
     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
           1 Order Accipitres Plinius, nom. inval. see Order Accipitres Linnaeus, 1758
           2 Order Picae nom. inval. see Order Picae Linnaeus, 1758
           3 Order Anseres nom. inval. see Order Anseres Linnaeus, 1758
           4 Order Scolopaces nom. inval. see Order Grallae Linnaeus, 1758
           5 Order Gallinae nom. inval. see Order Gallinae Linnaeus, 1758
           6 Order Passeres nom. inval. see Order Passeres Linnaeus, 1758