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 Icteridae Vigors, 1825 - New World blackbirds
                 Genus Molothrus Swainson, 1832
                   1 Molothrus rufoaxillaris Cassin, 1866
                   2 Molothrus oryzivorus (J.F. Gmelin, 1788)
                   3 Molothrus aeneus (Wagler, 1829) - bronzed cowbird
                   4 Molothrus bonariensis (J.F. Gmelin, 1789) - shiny cowbird
                   5 Molothrus ater (Boddaert, 1783) - brown-headed cowbird