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NOVA
Dino Birds
Season 52
Episode 3
Why are birds the only dinosaurs still alive today? Rare fossil discoveries are revealing the secrets of bird evolution, telling the story of how some resilient feathered dinos became the vast array of colorful bird species that fill our skies.
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53:15
Amazing fossils reveal how mammals took over after an asteroid wiped out the dinosaurs.
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53:32
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53:23
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