Ocean channel in Bahamas marks genetic divide in Brazilian free-tailed bats – Research News https://www.floridamuseum.ufl.edu/science/ocean-channel-in-bahamas-marks-genetic-divide-in-brazilian-free-tailed-bats/
Brazilian free-tailed bats are expert flyers, capable of migrating hundreds of miles and regularly traveling more than 30 miles a night. But they pull up short at a narrow ocean channel that cuts across the Bahamas, dividing bat populations that last shared an ancestor hundreds of thousands of years
suddenly had dozens of free-tailed bat specimens at hand