Opinions from S. L. Olson and H. F. James 1991

  • 'Accipitridae belongs to Falconiformes'
  • 'Anatidae belongs to Anseriformes'
  • 'Apteribis belongs to Plataleidae'
  • 'Apteribis brevis belongs to Apteribis'
  • 'Apteribis glenos belongs to Apteribis'
  • 'Branta belongs to Anatidae'
  • 'Branta hylobadistes belongs to Branta'
  • 'Chelychelynechen belongs to Anatidae'
  • 'Chelychelynechen quassus belongs to Chelychelynechen'
  • 'Circus belongs to Accipitridae'
  • 'Circus dossenus belongs to Circus'
  • 'Falco albicilla is recombined as Haliaeetus albicilla'
  • 'Falco leucocephalus is recombined as Haliaeetus leucocephalus'
  • 'Geochen belongs to Anatidae'
  • 'Geochen rhuax belongs to Geochen'
  • 'Grallistrix belongs to Strigidae'
  • 'Grallistrix auceps belongs to Grallistrix'
  • 'Grallistrix erdmani belongs to Grallistrix'
  • 'Grallistrix geleches belongs to Grallistrix'
  • 'Grallistrix orion belongs to Grallistrix'
  • 'Haliaeetus belongs to Accipitridae'
  • 'Plataleidae belongs to Ciconiiformes'
  • 'Porzana belongs to Rallidae'
  • 'Porzana keplerorum belongs to Porzana'
  • 'Porzana menehune belongs to Porzana'
  • 'Porzana ralphorum belongs to Porzana'
  • 'Porzana severnsi belongs to Porzana'
  • 'Porzana ziegleri belongs to Porzana'
  • 'Procellariidae belongs to Procellariiformes'
  • 'Ptaiochen belongs to Anatidae'
  • 'Ptaiochen pau belongs to Ptaiochen'
  • 'Pterodroma belongs to Procellariidae'
  • 'Pterodroma jugabilis belongs to Pterodroma'
  • 'Rallidae belongs to Gruiformes'
  • 'Strigidae belongs to Strigiformes'
  • 'Thambetochen belongs to Anatidae'
  • 'Thambetochen chauliodous belongs to Thambetochen'
  • 'Thambetochen xanion belongs to Thambetochen'