Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
   Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
     Infraclass Neoaves Sibley et al., 1988 see Subcohort Neoaves Sibley et al., 1988
       Parvclass Passerae see Superorder Passerimorphae Sibley et al., 1988
         Superorder Passerimorphae Sibley et al., 1988
           Order Passeriformes Linnaeus, 1758
             Suborder Passeri see Suborder Passeres (C. Linnaeus, 1758) C. Linnaeus, 1766
               Parvorder Passerida (C. Linnaeus, 1758) Sibley et al., 1988
                 Superfamily Sylvioidea
                   01 Family Sittidae Lesson, 1828 - nuthatches and wallcreeper
                   02 Family Certhiidae Leach, 1820 - treecreepers
                   03 Family Paridae Vigors, 1825 - tits, chickadees
                   04 Family Aegithalidae Reichenbach, 1850 - long-tailed tits
                   05 Family Hirundinidae Rafinesque, 1815 - swallows, martins
                   06 Family Regulidae Vigors, 1825
                   07 Family Pycnonotidae Gray, 1840 - bulbuls
                   08 Family Hypocoliidae Delacour & Amadon, 1949 see Subfamily Hypocoliinae
                   09 Family Cisticolidae Sundevall, 1872 - cisticolas and allies
                   10 Family Zosteropidae Bonaparte, 1853 - white eyes
                   11 Family Sylviidae Leach, 1820 - Old World warblers