剧情介绍
Adocumentaryfilmedinstunning3DhighdefinitionforIMAX.Thisfilmwillshowcasemillionsofmigratorybirds,theimportancethewetlandsoftheuppermidwestplayintheirlives,anddangerstothecontinuedexistenceofthePrairiePotholeregionthatissocrucialtothefutureofmigratorybirdsinNorthAmerica.
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