Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes
           Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
             Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
               Superorder Neognathae Pycraft, 1900 see Cohort Neognathae Pycraft, 1900
                 Order Passeriformes Linnaeus, 1758
                   1 ?Family †Palaeoscinidae Howard, 1957
                   2 Family Alaudidae Vigors, 1825 - larks
                   3 Family Corvidae Vigors, 1825 - crows, jays
                   4 Family Sittidae Lesson, 1828 - nuthatches and wallcreeper
                   5 Family Fringillidae Leach, 1820 - finches and Hawaiian honeycreepers
                   6 Family Eurylaimidae - broadbills