Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Galloanserae Sibley, Ahlquist & Monroe Jr., 1988 see Subcohort Galloanserae Sibley, Ahlquist & Monroe Jr., 1988
       [Order] Galliformes Temminck, 1820 - fowl
         phasianoids see Superfamily Phasianoidea Vigors, 1825
           Family Phasianidae Vigors, 1825 - turkeys, grouse, pheasants, partridges
             Subfamily Perdicinae Bonaparte, 1838
               Genus Perdix Brisson, 1760
                 Perdix perdix (Linnaeus, 1758) - grey partridge
                   1 Perdix perdix perdix (Linnaeus, 1758)
                   2 Perdix perdix armoricana Hartert, 1917
                   3 Perdix perdix sphagnetorum (Altum, 1894)
                   4 Perdix perdix hispaniensis Reichenow, 1892
                   5 Perdix perdix italica Hartert, 1917
                   6 Perdix perdix lucida (Altum, 1894)
                   7 Perdix perdix canescens Buturlin, 1906
                   8 Perdix perdix robusta Homeyer & Tancré, 1883