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 Tetraoninae Vigors - grouse see Family Tetraonidae Vigors, 1825
               Genus Tetrao Linnaeus, 1758
                 Tetrao urogallus Linnaeus, 1758 - western capercaillie
                   1 Tetrao urogallus cantabricus Castroviejo, 1967
                   2 Tetrao urogallus aquitanicus Ingram, 1915
                   3 Tetrao urogallus major Brehm, 1831
                   4 Tetrao urogallus rudolfi Dombrowski, 1912
                   5 Tetrao urogallus volgensis Buturlin, 1907
                   6 Tetrao urogallus urogallusᵀ Linnaeus, 1758
                   7 Tetrao urogallus kureikensis Buturlin, 1927
                   8 Tetrao urogallus uralensis Menzbier, 1887
                   9 Tetrao urogallus taczanowskii (Stejneger, 1885)