#screamer  gooselike aquatic bird of South America having a harsh trumpeting call
  supertype:  waterfowl__water_bird__waterbird__waterbird  freshwater aquatic bird
  member of:  family_Anhimidae
  subtype:  horned_screamer__Anhima_cornuta  screamer having a hornlike process projecting from the forehead
  subtype:  crested_screamer__crestedscreamer  distinguished from the horned screamer by a feathery crest on the back of the head
     subtype:  chaja__Chauna_torquata  largest crested screamer; naive to southern Brazil and Argentina

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