#tree_swallow__tree_martin__Hirundo_nigricans  of Australia and Polynesia; nests in tree cavities
  supertype:  swallow  small long-winged songbird noted for swift graceful flight and the regularity of its migrations
  member of:  genus_Hirundo__Hirundo  type genus of the Hirundinidae
     member of:  family_Hirundinidae__Hirundinidae  swallows and martins
        member of:  suborder_Oscines__Oscines__Passeres__suborder_Passeres  two names for the suborder of typical songbirds
           member of:  order_Passeriformes__Passeriformes  largest order of birds comprising about half the known species: rooks; finches; sparrows; tits; warblers; robins; wrens; swallows; etc.; in four suborders: Eurylaimi; Tyranni; Menurae: Oscines or Passeres
              member of:  class_Aves__Aves  birds
                 member of:  subphylum_Vertebrata__Vertebrata__Craniata__subphylum_Craniata  fishes; amphibians; reptiles; birds; mammals
                    member of:  phylum_Chordata__Chordata  comprises true vertebrates and animals having a notochord
                       member of:  kingdom_Animalia__Animalia__animal_kingdom  taxonomic kingdom comprising all living or extinct animals

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