Imperium naturæ C. Linnaeus, 1758 - nature
   Mundus Plinius - physical world
     naturalia - natural bodies
       Regnum Animale C. Linnaeus, 1758 - animal kingdom see Kingdom Animalia Linnaeus, 1758
         Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
           Order Gallinae Linnaeus, 1758
             87 Genus Pavo Linnaeus, 1758
             88 Genus Meleagris Linnaeus, 1758
             89 Genus Crax Linnaeus, 1758
             90 Genus Phasianus Linnaeus, 1758
             91 Genus Tetrao Linnaeus, 1758