Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
Count: [s] 23o;144f;2043g;9628s;2127ss; ‡1f;21g;74s;12ss
   Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
  Count: [s] 23o;144f;2043g;9628s;2127ss; ‡1f;21g;74s;12ss
     Infraclass Neoaves Sibley et al., 1988 see Subcohort Neoaves Sibley et al., 1988
    Count: [s] 21o;139f;2029g;9571s;2115ss; ‡1f;21g;74s;12ss
       Parvclass Passerae see Superorder Passerimorphae Sibley et al., 1988
      Count: [s] 10o;106f;1787g;8445s;1871ss; ‡1f;18g;69s;9ss
         Superorder Passerimorphae Sibley et al., 1988
        Count: -
           Order Passeriformes Linnaeus, 1758
          Count: [s] 46f;1157g;5711s;1372ss; ‡10g;28s;6ss
             Suborder Passeri see Suborder Passeres (C. Linnaeus, 1758) C. Linnaeus, 1766
            Count: [s] 36f;866g;4554s;1101ss; ‡10g;26s;6ss
               Parvorder Passerida (C. Linnaeus, 1758) Sibley et al., 1988
              Count: -
                 Superfamily Sylvioidea
                Count: [s] 11f;203g;1201s;237ss; ‡3s;2ss
                   Family Hirundinidae Rafinesque, 1815 - swallows, martins
                  Count: [s] 14g;89s;26ss
                     Subfamily Hirundininae
                    Count: [s] 13g;87s;26ss
                       Genus Progne Boie, 1826
                      Count: [s] 6s;3ss
                         Progne modesta Gould, 1838
                        Count: 3ss
                           1 Progne modesta modestaᵀ Gould, 1837 see Progne modesta Gould, 1838
                          Count: -
                           2 Progne modesta murphyi see Progne murphyi Chapman, 1925
                          Count: -
                           3 Progne modesta elegans (Baird, 1865) see Progne elegans S.F. Baird, 1865
                          Count: -