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scienceOct 13, 20255:51pending

Terror Birds: Giants of the Ancient Americas

About this episode

We unpack the anatomy and extraordinary predator toolkit of South America’s terror birds—the flightless, axe-beaked giants that stood up to 10 feet tall, weighed as much as 350 kg, and ruled for tens of millions of years. From bifurcate neural spines and a flexible neck to a dromaeosaur-like sickle claw and functionally didactyl feet, these hunters could deliver rapid, devastating strikes. One genus even migrated into North America during the Great American Interchange. We’ll trace their climb to the top, why their rule lasted so long, and how climate change and shifting environments help explain their ultimate decline.


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Terror Birds: Giants of the Ancient Americas

Intellectually Curious

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