From roughly March through October, up to 1.5 million Mexican free-tailed bats stream out from under the Congress Avenue Bridge at dusk, one of the largest urban bat colonies in North America. Watch from the hike-and-bike trail below the bridge, the bridge sidewalk itself, or the free viewing area near the Austin American-Statesman building at 305 South Congress Avenue, all outdoor, leashed-dog-friendly vantage points.
๐ก Arrive 30-45 minutes before sunset and check the Bat Conservation International flight forecast online, exact emergence time varies by night



