In Austin, Texas, a tourist attraction is to gather on the Congress Avenue Bridge, on the lawn under the bridge, and in boats on the river to see the nightly flight of the Mexican free-tailed bats.
From the Bat Conservation International:
When engineers reconstructed the Congress Avenue Bridge in 1980 they had no idea that new crevices beneath the bridge would make an ideal bat roost. Although bats had lived there for years, it was headline news when they suddenly began moving in by the thousands. Reacting in fear and ignorance, many people petitioned to have the bat colony eradicated.
About that time, Merlin Tuttle brought BCI to Austin and told the city the surprising truth: that bats are gentle and incredibly sophisticated animals; that bat-watchers have nothing to fear if they don’t try to handle bats; and that on the nightly flights out from under the bridge, the Austin bats eat from 10,000 to 20,000 pounds of insects, including agricultural pests.
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