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
             Muscicapoidea
               Family Sittidae Lesson, 1828 - nuthatches and wallcreeper
                 Subfamily Sittinae
                   Genus Sitta Linnaeus, 1758
                     01 Sitta europaea Linnaeus, 1758
                     02 Sitta nagaensis Godwin-Austen, 1874
                     03 Sitta cashmirensis W.E. Brooks, 1871
                     04 Sitta castanea Lesson, 1830
                     05 Sitta himalayensis Jardine & Selby, 1835
                     06 Sitta victoriae Rippon, 1904 - white-browed nuthatch
                     07 Sitta pygmaea Vigors, 1839 - pygmy nuthatch
                     08 Sitta pusilla Latham, 1790 - brown-headed nuthatch
                     09 Sitta whiteheadi Sharpe, 1884
                     10 Sitta ledanti Vielliard, 1976 - Algerian nuthatch
                     11 Sitta krueperi Pelzeln, 1863
                     12 Sitta yunnanensis Ogilvie-Grant, 1900
                     13 Sitta canadensis Linnaeus, 1766 - red-breasted nuthatch
                     14 Sitta villosa J. Verreaux, 1865
                     15 Sitta leucopsis Gould, 1850
                     16 Sitta carolinensis Latham, 1790 - white-breasted nuthatch
                     17 Sitta neumayer Michahelles, 1830
                     18 Sitta tephronota Sharpe, 1872
                     19 Sitta frontalis Swainson, 1820
                     20 Sitta solangiae (Delacour & Jabouille, 1930)
                     21 Sitta oenochlamys (Sharpe, 1877)
                     22 Sitta azurea Lesson, 1830
                     23 Sitta magna Wardlaw Ramsay, 1876
                     24 Sitta formosa Blyth, 1843