NOVA

Bird Brain

Passport Season 44 Episode 20 | 53m 30s Video has closed captioning.

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?

Aired: 12/20/17

Expires: 12/19/20

Rating: TV-G

Problems Playing Video? | Closed Captioning

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