OCTOBER 12, 2011:
I sat at the traffic light at I-35 and Highway 79 in Round Rock at 7 PM tonight and saw bands and bands and bands of flying creatures flying north. Are these bats or birds?!
I believe you were seeing bats. There is a very large roost in a Hwy 35 overpass in Round Rock right in that vicinity. What a sight, huh?
While you’re looking up, keep an eye out for migrating hawks. They are peaking right now, and come through this area on their way south. They will be much higher up than the bats were.
Thank you for your question to Travis Audubon. Enjoy the bats and birds!