Bracken Cave is the summer home to the largest colony of bats in the world. An estimated 20 million Mexican Free-tailed Batsroost in the cave from March to October making it the largest known concentration of mammals.[1] The cave is located in southern Comal County, Texas, outside the city of San Antonio. The 100-foot-wide crescent shaped opening to the cave lies at the bottom of a sinkhole, formed when the roof of the cave collapsed. Access to the cave is restricted to protect the habitat of the resident.
The Bracken Cave is the destination every March or April of over 20,000,000 Mexican Free-tailed bats (Tadarida brasiliensis). These bats fly as much as 1,000 miles from Mexico to this cave. After arriving in the cave, the migrant mothers give birth to pups. An astounding 500 pups have been recorded clinging to one square foot of the cave walls—an ingenious way for keeping warm. Source: Wikipedia
Photo Source: Collected from Internet
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