#bittern  relatively small compact tawny-brown heron with nocturnal habits and a booming cry; found in marshes
  supertype:  #heron  gray or white wading bird with long neck and long legs and (usually) long bill
  subtype:  #American_bittern__stake_driver__stakedriver__Botaurus_lentiginosus  a kind of bittern
  subtype:  #European_bittern__Botaurus_stellaris  a kind of bittern
  subtype:  #least_bittern__leastbittern__Ixobrychus_exilis  small American bittern

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