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Poster NOVA Season 2 Why Do Birds Sing? 1974

NOVA Season 2 Why Do Birds Sing? 1974

NOVA travels to forests and marshes to discover why birds sing and finds surprising parallels with the acquisition of speech in humans.

  • Released: 1974-11-03
  • Runtime: 55 minutes
  • Genre: Documentary
  • Stars:
  • Director:
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