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 Ciconiiformes Bonaparte, 1854
             Suborder Charadrii Huxley, 1867 - shorebirds see Order Charadriiformes Huxley, 1867
               Infraorder Charadriides Huxley, 1867
                 Parvorder Charadriida see Superfamily Charadrioidea Vigors, 1825
                   Superfamily Laroidea Vigors, 1825
                     Family Laridae Vigors, 1825 - gulls, terns and skimmers
                       Subfamily Alcinae Vigors - auks, murres, puffins
                         Genus Cepphus Pallas, 1769
                           Cepphus columba Pallas, 1811 - pigeon guillemot
                             1 Cepphus columba columbaᵀ Pallas, 1811 - pigeon guillemot
                             2 Cepphus columba snowi Stejneger, 1897 - Kurile guillemot