Subclass Avialae Gauthier, 1986 see Clade Avialae Gauthier 1986
Count: [o] 31o;113f; ‡2o;6f; †11o;14f
   Infraclass Aves Linnaeus, 1758 see Subclass Aves Linnaeus, 1758
  Count: [o] 31o;113f; ‡2o;6f; †11o;14f
     Parvclass Neornithes Gadow, 1893 see Subclass Neornithes Gadow, 1893
    Count: [o] 31o;113f; ‡2o;6f; †4o;7f
       Cohort Neognathae Pycraft, 1900
      Count: [o] 27o;107f; ‡3f; †4o;7f
         Subcohort Neoaves Sibley et al., 1988
        Count: [o] 25o;99f; ‡2f; †2o;4f
           Division Terrestrornithes B.C. Livezey & R.L. Zusi, 2007
          Count: [o] 17o;78f; ‡2f; †1o;3f
             Subdivision Telmatorae Lowe, 1931
            Count: [f†f] 4o;28f; ‡1f; †2f
               Superorder Charadriimorphae Huxley, 1867
              Count: [f†f] 4o;28f; ‡1f; †2f
                 Order Gruiformes Bonaparte, 1854
                Count: [f†f] 7f; ‡1f; †2f
                   Suborder Grues Bonaparte, 1854 - cranes, limpkins, trumpeters
                  Count: [f] 3f
                     Superfamily Gruoidea Vigors, 1825
                    Count: [f] 2f
                       1 Family Aramidae Bonaparte, 1849 - limpkins
                      Count: -
                       2 Family Gruidae Vigors, 1825 - cranes
                      Count: -