Crowds gather every evening from April through October to watch the Mexican free-tailed Bats emerge from underneath the Congress Avenue Bridge in Austin, TX.jpg
The bats of the Congress Ave. Bridge in Austin, Texas also help keep Austin's insect population at bay and in check. Eating roughly 20-30 thousand pounds of insects on each night flight, nearly one and a half million bats in Austin call the South Congress Bridge home during this time period. Most bat colonies of a million or more can consume up too 250 tons of a variety of insects in a given night. Drawn to areas with water access and warm conditions, most bats in Austin delight in moths, crickets, grasshoppers, and Texas-size mosquitoes that the South Congress Bridge offers in great number.