Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
   Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
     Neoaves Sibley et al., 1988 see Subcohort Neoaves Sibley et al., 1988
       Passerae see Superorder Passerimorphae Sibley et al., 1988
         Passerimorphae Sibley et al., 1988
           Ciconiiformes Bonaparte, 1854
             Charadrii Huxley, 1867 - shorebirds see Order Charadriiformes Huxley, 1867
               Charadriides Huxley, 1867
                 Charadriida see Superfamily Charadrioidea Vigors, 1825
                   Laroidea Vigors, 1825
                     Laridae Vigors, 1825 - gulls, terns and skimmers
                       Alcinae Vigors - auks, murres, puffins
                         Alca Linnaeus, 1758
                           1 Alca torda Linnaeus, 1758 - razorbill