Neornithes Gadow, 1893 - living birds
Count: [s] 23o;193f;2136g;9595s;8ss; ‡1f;26g;131s
   Neornithes Gadow, 1893 - living birds
  Count: [s] 23o;193f;2136g;9595s;8ss; ‡1f;26g;131s
     Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
    Count: [s] 23o;187f;2121g;9539s; ‡1f;26g;128s
       Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
      Count: [s] 23o;187f;2121g;9539s; ‡1f;26g;128s
         Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
        Count: [*] 21o;179f;1992g;9095s; ‡1f;23g;120s
           Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
          Count: [*] 21o;179f;1992g;9095s; ‡1f;23g;120s
             [Order] Procellariiformes Fürbringer, 1888
            Count: [*†*] 4f;26g;107s;99ss; ‡5s;1ss
               Family Procellariidae Leach, 1820 - petrels, shearwaters
              Count: [*†*] 14g;70s;54ss; ‡4s;1ss
                 Genus Pterodroma Bonaparte, 1856
                Count: [*†*] 29s;12ss; ‡1s;1ss
                   Pterodroma phaeopygia (Salvin, 1876) - dark-rumped petrel
                  Count: [*] 2ss
                     Pterodroma phaeopygia sandwichensis (Ridgway, 1884) - hawaiian dark-rumped petrel
                    Count: -