More than one million bats nest under the Congress Avenue Bridge in Austin, Texas, and fill the sky every evening from spring to fall. Discover how the people of Austin, Texas, stopped being afraid of the more than one million bats nesting under the Congress Avenue Bridge and, instead, welcomed them. This true story includes a foreword by bat biologist Dr. Merlin Tuttle, who came to Austin to advocate for the colony by educating residents about the ways in which bats are good for the environment, and for humans too. Now, tourists from all over the world come to Austin to watch the Brazilian free-tail bats fill the sky every evening in early spring.