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Organism
  Animalia
      Chordata
            Aves
              Avialae
                    Accipitriformes
                            Cathartidae
                              Cathartinae
                                     Cathartes
                                             Cathartes aura
                                               Cathartes aura ruficollis
                                             Cathartes burrovianus
                                     Coragyps
                                             Coragyps atratus
                                     Sarcoramphus
                                             Sarcoramphus papa
                                     Gymnogyps
                                             Gymnogyps californianus