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
                   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 villosa J. Verreaux, 1865
                         13 Sitta yunnanensis Ogilvie-Grant, 1900
                         14 Sitta canadensis Linnaeus, 1766 - red-breasted nuthatch
                         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