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Bird Brain
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Season 44
Episode 21
66 million years ago, a seven-mile-wide asteroid collided with Earth, triggering a chain...
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Season 44
Episode 19
From lobster claws and dog teeth to bee stings and snake fangs, every creature depends on...
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NOVA

Bird Brain

Season: 44
Eps: 20

Watch astonishing tests of avian aptitude: parrots that can plan for the future, jackdaws that can “read” human faces, and crows that can solve multi-step puzzles with tools like pebbles, sticks, and hooks. Could these just be clever tricks, based on instinct or triggered by subtle cues from their human handlers?

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