Last updated on April 16, 2014 at 1:21 EDT
Mexican Free-tailed Bats
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Mexican Free-tailed Bats

January 3, 2011
Mexican free-tailed bats exiting a limestone cavern in southern Texas. The bats are mothers who have recently given birth. They are heading out to forage and will return by morning to nurse their babies. Approximately one-million mothers inhabit the cave at this time of year. (Date of Image: June 1988)