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 Paridae Vigors, 1825 - tits, chickadees
                 Genus Parus Linnaeus, 1758
                   Parus funereus (J. Verreaux & E. Verreaux, 1855)
                   Parus niger Vieillot, 1818
                   Parus leucomelas Rüppell, 1840
                   Parus carpi Macdonald & Hall, 1957
                   Parus albiventris Shelley, 1881
                   Parus leuconotus Guérin-Méneville, 1843
                   Parus fasciiventer Reichenow, 1893 - stripe-breasted tit
                   Parus fringillinus Fischer & Reichenow, 1884
                   Parus rufiventris Bocage, 1877
                   Parus thruppi Shelley, 1885
                   Parus afer J.F. Gmelin, 1789
                   Parus cinerascens Vieillot, 1818
                   Parus griseiventris Reichenow, 1882
                   Parus nuchalis Jerdon, 1845
                   Parus major Linnaeus, 1758
                   Parus bokharensis M.H.K. Lichtenstein, 1823
                   Parus monticolus Vigors, 1831
                   Parus venustulus Swinhoe, 1870
                   Parus elegans Lesson, 1831
                   Parus amabilis Sharpe, 1877 - Palawan tit
                   Parus xanthogenys Vigors, 1831
                   Parus spilonotus Bonaparte, 1850
                   Parus holsti Seebohm, 1894
                   Parus cyanus Pallas, 1770
                   Parus flavipectus Severtsov, 1873
                   Parus rubidiventris Blyth, 1847
                   Parus rufonuchalis Blyth, 1849
                   Parus melanolophus Vigors, 1831
                   Parus ater Linnaeus, 1758
                   Parus varius Temminck & Schlegel, 1848
                   Parus semilarvatus (Salvadori, 1865)
                   Parus palustris Linnaeus, 1758
                   Parus hypermelaenus (Berezowski & Bianchi, 1891)
                   Parus lugubris Temminck, 1820
                   Parus montanus Conrad von Baldenstein, 1827
                   Parus songarus Severtsov, 1873
                   Parus carolinensis Audubon, 1834 - carolina chickadee
                   Parus atricapillus Linnaeus, 1766 - black-capped chickadee
                   Parus gambeli Ridgway, 1886 - mountain chickadee
                   Parus sclateri O. Kleinschmidt, 1897 - Mexican chickadee
                   Parus superciliosus (Przevalski, 1876)
                   Parus davidi (Berezowski & Bianchi, 1891)
                   Parus cinctus Boddaert, 1783 - siberian tit
                   Parus hudsonicus J.R. Forster, 1772 - boreal chickadee
                   Parus rufescens J.K. Townsend, 1837 - chestnut-backed chickadee
                   Parus dichrous Blyth, 1844
                   Parus cristatus Linnaeus, 1758
                   Parus wollweberi (Bonaparte, 1850) - bridled titmouse
                   Parus inornatus Gambel, 1845 - plain titmouse
                   Parus ridgwayi Richmond, 1902
                   Parus bicolor Linnaeus, 1766 - tufted titmouse
                   Parus caeruleus Linnaeus, 1758