CNN - Study shows North American bird population in rapid decline

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CNN - Study shows North American bird population in rapid decline

CNN - Study shows North American bird population in rapid decline

  • TV-G
  • 2019
  • 3mins
When a study found that the US and Canada has lost nearly three billion birds since the 1970's Audubon scientists took the latest climate models and looked into the future of over 600 species. CNN's Bill Weir reports.