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 Passeroidea
                   Family Passeridae Rafinesque, 1815 - sparrows, snowfinches and allies
                     Subfamily Motacillinae Bonaparte, 1831 see Family Motacillidae Horsfield, 1821
                       Genus Motacilla Linnaeus, 1758
                         Motacilla alba Linnaeus, 1758 - white wagtail
                           1 Motacilla alba albaᵀ Linnaeus, 1758
                           2 Motacilla alba yarrelli Gould, 1837
                           3 Motacilla alba subpersonata Meade-Waldo, 1901
                           4 Motacilla alba personata Gould, 1861