#genus_Hirundo__Hirundo  type genus of the Hirundinidae
  supertype:  #bird_genus  a genus of birds
  member of:  #family_Hirundinidae
  member:  #barn_swallow__chimney_swallow__chimneyswallow__Hirundo_rustica  common swallow of North America and Europe that nests in barns etc.
  member:  #cliff_swallow__cliffswallow__Hirundo_pyrrhonota  North American swallow that lives in colonies and builds bottle-shaped mud nests on cliffs and walls
  member:  #tree_swallow__tree_martin__Hirundo_nigricans  of Australia and Polynesia; nests in tree cavities

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