This comprehensive guide provides an in-depth exploration of the bats living in Bracken Cave, Texas. It covers the species of bats that inhabit the cave, their behavior, and the ecology of the cave itself. The guide also provides information on the conservation efforts that are
From Wikipedia
Bracken Cave is a cave located in southern Comal County, Texas, outside the city of San Antonio. The 100-foot (30 m)-wide crescent shaped opening to the cave lies at the bottom of a sinkhole, formed when the roof of the cave collapsed. It is the summer home to the largest colony of bats in the world. An estimated 20 million Mexican free-tailed bats roost in the cave from March to October, making it the largest known concentration of mammals in the world.