NOVA

The Mysteries of Optic Flow

Clip: Season 41 Episode 9 | 2m 58s

How do birds manage to fly through narrow spaces without constantly bumping into trees or buildings? It turns out that they use a trick of the eye called optic flow. Understanding what optic flow is and how birds use it could help us build a safer world for our feathered friends.

Aired: 04/07/14

Rating: NR

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