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] Anseriformes Wagler, 1831 - waterfowl and screamers
         Family Anatidae Vigors, 1825 - ducks, geese, swans
           Subfamily Anserinae Vigors, 1825 - geese
             Genus Anser Brisson, 1760
               Anser fabalis (Latham, 1787) - bean goose
                 1 Anser fabalis fabalis (Latham, 1787) - forest bean-goose
                 2 Anser fabalis johanseni Delacour, 1951
                 3 Anser fabalis middendorffi Severtsov, 1873
                 4 Anser fabalis rossicus Buturlin, 1933
                 5 Anser fabalis serrirostris Swinhoe, 1871 - tundra bean-goose