Fredericksburg Texas Bats

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The Old Tunnel Wildlife Management Area is the smallest Wildlife Management Area in Texas, containing only 16.1 acres of land. The abandoned railroad tunnel is home to up to three million Brazilian free-tailed bats (T. b. mexicana) and 3,000 Cave myotis (Myotis velifer) from April to October, more mammals than any other WMA. From May to October, visitors come to watch the bats emerge from the tunnel each night, and nightly educational programs provide guests with a better understanding of the life history and ecology of bats. In July and August there are over three million Mexican Free-tailed bats (Tadarida brasiliensis) and 1,000-3,000 Cave Myotis (Myotis velifer) in Old Tunnel. The Mexican Free-tailed bat is a medium-sized bat, weighing about 12-15 grams (12 paperclips). The title "Mexican" is added to their name because they migrate to Mexico in the winter months. Old Tunnel bats usually leave the tunnel in late October, and fly to Mexico. During this migration, they can fly at altitudes of 10,000 feet and speeds of 60 mph. On summer nights, the Old Tunnel bats usually emerge within an hour before or after sunset. Most bats exit through the south end of the tunnel, spiraling in a counter-clockwise direction in order to gain altitude over nearby trees. Red-tailed hawks are sometimes seen feeding on the bats as they emerge, however these and other predators do not impact the bat population.

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Category: Travel
Uploaded: July 22nd, 2008 @ 4:34 am
Author: jfred1840

Length: 00:41
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