Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
       [Order] Passeriformes Linnaeus, 1758
         oscines see Suborder Oscines
           Passerida - passeridans see Parvorder Passerida (C. Linnaeus, 1758) Sibley et al., 1988
             Sylvioidea
               Family Hirundinidae Rafinesque, 1815 - swallows, martins
                 Subfamily Hirundininae
                   Genus Delichon Moore, 1854
                     1 Delichon urbicum (C. Linnaeus, 1758)
                     2 Delichon dasypus (Bonaparte, 1850)
                     3 Delichon nipalense F. Moore, 1854