Wednesday, April 20, 2011

Mexican Free-tailed Bats

The other night we took a friend to see the Mexican Free-tailed Bats at the Congress Street Bridge here in Austin, Texas. This is the largest urban bat colony in the world. It had been a while since I had seen it and reminded me of the great photo opportunities I've had with this species.

Mexican Free-tail Bat
The Mexican Free-tailed or sometimes called Brazillian Free-tailed Bat (Tadarida brasiliensis) is a wide-ranging bat found throughout North, Central and South America. They get their name because of their long, prominent tail.

Mexican_FreeTailed_Bat
They can roost in a number of different places from buildings to trees, but they are probably best known for the large colonies they form in caves. The photo above was taken at the Eckert James River Bat cave owned by the Nature Conservancy. It is one of the largest bat nursuries in North America and his home to around 4 million bats throughout the summer. The emergences from this cave are quite impressive.

Bracken Cave

Bracken Cave
The two photos above were taken at Bracken Cave owned by Bat Conservation International. It is home to the largest bat colony in the world and is home to some 20 million Mexican Free-tailed bats that emerge every night throughout the summer. It is truly a spectacular phenomenon and I encourage anyone  who has the opportunity to watch an emergence. They are so numerous when coming out of the cave that as they fly in a cyclone like pattern up and out of the entrance, some bats get pushed to the outside and are actually impaled on prickly pear cactus spines!

2 comments:

taalbrecht589 said...

Wonderful artwork Nature Photography is simply more successful when you've got a clear message. That doesn't mean you have to make all of your images allegories or political statements. These messages are usually fairly simple, and often exhausting to articulate.

montreal photo enthusiast said...

Small and creepy creature. Oh well that's the wonders of nature that we should be happy about.

About Me

My Photo
I'm Curator of Entomology at the University of Texas at Austin. Over the last 15 years I have focused on dragonflies and damselflies. I recently wrote a book on this group in Texas and the South-central United States that was published by Princeton University Press. It contains many of my photos. I am currently working on two field guides for Texas dragonflies and damselflies to be published by the University of Texas Press. I have had the opportunity to travel extensively throughout Latin America, Africa and other parts of the world where I enjoy taking photos of pretty much anything that will allow me to capture its image.