#night_heron__nightheron__night_raven__nightraven  nocturnal or crepuscular herons
  supertype:  heron  gray or white wading bird with long neck and long legs and (usually) long bill
  subtype:  black-crowned_night_heron__blackcrownednightheron__Nycticorax_nycticorax  night heron of both Old and New Worlds
  subtype:  yellow-crowned_night_heron__Nyctanassa_violacea  North American night heron

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