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
             Passeroidea
               Family Emberizidae Vigors, 1825 - buntings, American sparrows and allies
                 Subfamily Emberizinae see Family Emberizidae Vigors, 1825
                   Genus Spizella Bonaparte, 1831
                     1 Spizella arborea (A. Wilson, 1810) - American tree sparrow
                     2 Spizella passerina (Bechstein, 1798) - chipping sparrow
                     3 Spizella pusilla (A. Wilson, 1810) - field sparrow
                     4 Spizella wortheni Ridgway, 1884 - Worthen's sparrow
                     5 Spizella atrogularis (Cabanis, 1851) - black-chinned sparrow
                     6 Spizella pallida (Swainson, 1832) - clay-colored sparrow
                     7 Spizella breweri Cassin, 1856 - Brewer's sparrow