Bracken Cave Bat Flight

                                                                                                                         

After years of applying (usually too late) with BCI (Bat Conservation International) to view Member's Only Bat Flight Emergence from Bracken Cave, I finally got a spot and drove down to the San Antonio, TX area. This is the largest maternity colony of Mexican Free Tail Bats in the world.

Click on any photo to see an enlarged version.

bracken01.jpg
bracken01.jpg
bracken02.jpg
bracken02.jpg
bracken03.jpg
bracken03.jpg
You meet your BCI representative on a public road at a locked gate. He checks his list, lets you drive in and you wait for the others to arrive. We drive for a couple of miles and then we all get out and meet in the gathering area. The guide will tell you a little bit about the Mexican Free Tail and the area we're in. For instance, this was used by soldiers during the Civil War and WWI as a barracks to protect the cave as they were mining minerals out of it for gunpowder.
bracken04.jpg
bracken04.jpg
bracken05.jpg
bracken05.jpg
bracken06.jpg
bracken06.jpg
Here is the shed that held the vertical mine shaft that leads to the back of the cave. It's about 30 feet down and WHOA!! Not only a good guano smell but the most intense ammonia smell I have ever smelled in a cave. So strong it hurt your eyes! Also the heat coming from that mine shaft was pretty hot!! So combine guano, ammonia, and the heat and you wouldn't last long at all down there!
bracken07.jpg
bracken07.jpg
bracken08.jpg
bracken08.jpg
bracken09.jpg
bracken09.jpg
While our guide was talking about the MFT (Mexican Free Tail), they started flying (it was 6:30 p.m.!!!) It slowly got thicker and thicker And thicker...
bracken10.jpg
bracken10.jpg
bracken11.jpg
bracken11.jpg
bracken12.jpg
bracken12.jpg
and the guy kept on talking.... HEY! I want to see the cave entrance! <grin> He finally could tell from some of our movements and antics that we weren't paying attention to him. He said this is just the first flight of about 8 tonight. They come out in groups here... that makes sense. 36 million bats at one time would be a 'bit' crowded! <grin>
bracken13.jpg
bracken13.jpg
bracken14.jpg
bracken14.jpg
bracken15.jpg
bracken15.jpg
If this was the first flight... wow! I can't wait to see the rest! While I was at my hotel about 10 miles away we had a giant thunderstorm. They were heading toward the rain. It hasn't rained here in 3 months and even the crops are failing... hence, the bugs population isn't too high, hence again, the bats have to fly further to find food!! Finally we moved on to a natural amphitheater.. rocks along the side of the sinkhole looking right into the mouth of Bracken Cave.
bracken16.jpg
bracken16.jpg
bracken17.jpg
bracken17.jpg
bracken18.jpg
bracken18.jpg
You can go about 10 feet into the cave without an ammonia filter...15 feet you'll pass out from the intensity of the ammonia. We waited about 45 minutes and the 2nd flight started. And they were wanting to come out!! This group lasted about 40 - 50 minutes. I can't tell you how many were coming out. They don't have a true count either just estimates of about 3-7 million per group. And no collisions! Good flyers!! After that group flew, our guide said the next would begin in 45 min to 1 hr and it would be too late to get back to the cars, so we left by 8:30... nightfall (darkness) was close by at 9:00 so it was a good call!
bracken19.jpg
bracken19.jpg
bracken20.jpg
bracken20.jpg
bracken21.jpg
bracken21.jpg
bracken22.jpg
bracken22.jpg
bracken23.jpg
bracken23.jpg
bracken24.jpg
bracken24.jpg
bracken25.jpg
bracken25.jpg
bracken26.jpg
bracken26.jpg
bracken27.jpg
bracken27.jpg
                                                                                                                         


Click on any photo to see an enlarged version.


10 Second Movie of the flight

Click Here

Part II - 10 more seconds of movie

Back to Old News

 

Last updated: 7/26/09