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
           Order Gallinae nom. inval. see Order Gallinae Linnaeus, 1758
             62 Genus Struthio nom. inval. see Genus Struthio Linnaeus, 1758
             62.0 Genus "Strutio" nom. inval. see Genus Struthio nom. inval.
             63 Genus Casuarius nom. inval. see Genus Casuarius Brisson, 1760
             64 Genus Otis nom. inval. see Genus Otis Linnaeus, 1758
             65 Genus Pavo nom. inval. see Genus Pavo Linnaeus, 1758
             66 Genus Crax nom. inval. see Genus Crax Linnaeus, 1758
             67 Genus Meleagris nom. inval. see Genus Meleagris Linnaeus, 1758
             68 Genus Gallus nom. inval. see Genus Gallus Brisson, 1760
             69 Genus Phasianus nom. inval. see Genus Phasianus Linnaeus, 1758
             70 Genus Tetrao nom. inval. see Genus Tetrao Linnaeus, 1758
             71 Genus Fulica nom. inval. see Genus Fulica Linnaeus, 1758