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Organism
  Animalia
      Chordata
            Aves
              Avialae
                    Passeriformes
                      Passeri
                            Hirundinidae
                              Hirundininae
                                     Delichon
                                             Delichon urbicum
                                     Hirundo
                                             Hirundo rustica
                                     Neochelidon
                                             Neochelidon tibialis
                                     Notiochelidon
                                             Notiochelidon cyanoleuca
                                             Notiochelidon pileata
                                     Petrochelidon
                                             Petrochelidon fulva
                                             Petrochelidon pyrrhonota
                                     Progne
                                       Progne (Lophobius)
                                             Progne chalybea
                                               Progne chalybea chalybea
                                             Progne cryptoleuca
                                             Progne dominicensis
                                             Progne elegans
                                                   [Progne modesta]
                                             Progne sinaloae
                                             Progne subis
                                             Progne tapera
                                     Pygochelidon
                                             Pygochelidon cyanoleuca
                                     Riparia
                                             Riparia riparia
                                     Stelgidopteryx
                                             Stelgidopteryx ruficollis
                                             Stelgidopteryx serripennis
                                     Tachycineta
                                             Tachycineta albilinea
                                             Tachycineta albiventer
                                             Tachycineta bicolor
                                             Tachycineta cyaneoviridis
                                             Tachycineta euchrysea
                                             Tachycineta thalassina