Opinions from K. J. Bickart 1990

  • 'Accipitridae belongs to Accipitriformes'
  • 'Anabernicula belongs to Anatini'
  • 'Anas belongs to Anatini'
  • 'Anatidae belongs to Anseriformes'
  • 'Anatinae belongs to Anatidae'
  • 'Anatini belongs to Anatinae'
  • 'Anser belongs to Anserini'
  • 'Anser arenosus belongs to Anser'
  • 'Anserinae belongs to Anatidae'
  • 'Anserini belongs to Anserinae'
  • 'Aquila belongs to Buteoninae'
  • 'Branta belongs to Anatini'
  • 'Branta woolfendeni belongs to Branta'
  • 'Buteo belongs to Buteoninae'
  • 'Buteoninae belongs to Accipitridae'
  • 'Ciconia belongs to Ciconiidae'
  • 'Ciconiidae belongs to Ciconiiformes'
  • 'Circinae belongs to Accipitridae'
  • 'Circus belongs to Circinae'
  • 'Cygnus belongs to Anserini'
  • 'Cygnus (Olor) belongs to Cygnus'
  • 'Cygnus (Olor) belongs to Cygnus' according to Wagler 1832
  • 'Cygnus (Olor) mariae belongs to Cygnus (Olor)'
  • 'Gruidae belongs to Gruiformes'
  • 'Grus belongs to Gruiformes'
  • 'Grus haydeni belongs to Grus'
  • 'Gypaetinae belongs to Accipitridae'
  • 'Neophrontops belongs to Gypaetinae'
  • 'Podiceps belongs to Podicipedini'
  • 'Podicipedidae belongs to Podicipediformes'
  • 'Podicipedini belongs to Podicipedidae'
  • 'Podilymbini belongs to Podicipedidae'
  • 'Podilymbus belongs to Podilymbini'