spectators gather by the water near the Congress Street bridge in downtown Austin, Texas, on Tuesday, July 27, to watch the bats make their nightly flight for food. The largest urban bat colony in the world lives below a bridge in Austin. The drought has killed off crops in Texas, and that in turn has killed off those delicious pests the Mexican free-tailed bats consider dinner.
Each night the bats stream from under a bridge by the hundreds of thousands in a black cloud so large that it shows up on local weather radar.


