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 Sylviidae Leach, 1820 - Old World warblers
                 Subfamily Acrocephalinae Salvin, 1882
                   Genus Hippolais Conrad von Baldenstein, 1827
                     1 Hippolais languida (Hemprich & Ehrenberg, 1833)
                     2 Hippolais olivetorum (Strickland, 1837)
                     3 Hippolais polyglotta (Vieillot, 1817)
                     4 Hippolais icterina (Vieillot, 1817)