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
             Genus Pavo Linnaeus, 1758
               1 Pavo cristatus Linnaeus, 1758 - Indian peafowl
               2 Pavo bicalcaratus Linnaeus, 1758 see Polyplectron bicalcaratum (Linnaeus, 1758)