Would you believe that there is a single cave in Texas where there are twice as many bats as there are people in New York City? Every night starting in March and until they migrate south for the winter, about 20 million Mexican free-tailed bats (Tadarida brasiliensis) emerge from Bracken Cave— home to the largest bat colony in the world. The bats fly out of the cave and take to the skies in a swirling vortex to prey on insects.
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Caught in a Bat Tornado | Expedition Raw
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