500,000 Brazilian free-tailed bats fly out of a cave (video)

Using infra-red cameras:

From Wired

2 responses to “500,000 Brazilian free-tailed bats fly out of a cave (video)

  1. OK, that’s very cool.

  2. If you ever visit Austin, don’t forget to watch our bats:
    http://www.youtube.com/watch?v=xAKcYvkiBX0