Question
What’s up with bat watching in Austin?

Answer
Ummm, bats? Yes, bats! Bats at dusk. Bats under a bridge. From mid-March to November, the 1.5 million (!!) Mexican free-tail bats that live under the Congress Avenue bridge all fly out at dusk in search of something to eat and a place to go to the bathroom (that is your warning). It’s a pretty spectacular event, impressive by the sheer volume of bats taking flight all at once. To the north bank of the river, just east of the bridge, is an information kiosk that can answer all the rest of your questions or follow the link below.

Bat Conservation International Website