The Bats of Round Rock
It's fairly well known that Austin has a colony of Mexican free-tailed bats that live under the Congress Avenue bridge. What you may not know, and I didn't either until about a year ago, is that there is a bridge in Round Rock with its own bat colony. At Interstate 35 and McNeil Road, just south of the Highway 620 exit, you can watch the bats emerge just before dusk.
On June 11th, Carrie, our nephew Ronnie, and I spent about forty-five minutes waiting for the bats to emerge from the bridge. I thought they were going to come out sooner but luckily we had a football to throw around and pass the time. It was truly an amazing site seeing so many bats flying through the sky. You can view more pictures of the bats here.