#swan  stately heavy-bodied aquatic bird with very long neck and usually white plumage as adult
  supertype:  aquatic_bird__aquaticbird  wading and swimming and diving birds of either fresh or salt water
  subtype:  coscoroba  cob  pen.swan  cygnet  mute_swan  whooper_swan  tundra_swan  trumpeter_swan  black_swan
  member of:  family_Anatidae
  part:  swan's_down  down of the swan

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