Bat World's Bat Lab
AT THE

EVENTS AVAILABLE FOR PUBLIC ATTENDANCE 


The Bat Lab is located at the home of Barbara French, Director of Bat World's Austin Bat Hospital,  in Austin, Texas. Here we record captive bats in artificial roosts and flight cages, documenting social communication and feeding behavior of naïve bats.


Mexican free-tailed bat (Tadarida brasiliensis) - Social Communication

Currently, graduate student Teh-Sheng Ma from the Institute of Neurosciences at the University of Texas, Austin is working with Barbara at Bat World to document social communication of the Mexican free-tailed bat.  We are finding a complex “language” used by this species, including courtships songs that contain signature syllables that vary from one male to another. Rachel Page and Ruili Xie, both graduate students at U.T., have also recorded calls from Barbara's captive free-tail colony.

 

 

Dr. Gary McCracken's student, Amy Turmelle, at the University of Tennessee, Knoxville is determining paternity of young born in the captive free-tail colony. (Results so far suggest "Puff" if the favored male in the colony at the moment.)  This information will be used by Teh-Sheng to look at mate selection. For example, how do the courtship calls of successful males (those that father young) differ from the calls of unsuccessful males?

Red bat (Lasiurus borealis) - Feeding Behavior

Each year mother red bats (Lasiurus borealis) and their pups, as well as many orphaned red bat pups, arrive at the Austin Bat Hospital. Barbara cares for these bats, releasing mothers and their young once they are rehydrated and their injuries healed. Orphaned young are given supplemental feedings until they become proficient at feeding on flying insects in a large flight cage. Insects taken by young at the facility have been identified through examination of feces. Dr. John Whitaker at the University of Indiana in Terra Haute identified both available insect prey, and insects found in droppings of the young collected by Barbara. Results indicate that orphans feed selectively, and feed on insects that are common prey taken by red bats in the wild. This study also demonstrates that the ability of young red bats to feed on flying insects is innate.

During the summer of 2004, Erin Gillam, a graduate student of Dr. Gary McCracken at the University of Tennessee, Knoxsville, assisted in the collection of tiny tissue samples from red bat mothers and pups at the facility. DNA work will be done to determine paternity, i.e., do young in a single liter have the same or different fathers.

Barbara finds that young red bats use social calls to interact with one another and their mother. In the spring of 2005, Dr. Brock Fenton at the University of Western Ontario in Canada will be sending a graduate student to record and analyze these calls.

Pictured below is Jesse Barber in Ecuador.  Jesse is a graduate student at the Wake Forest University in Winston-Salem, North Carolina. His professor is entomologist, Bill Conner.   Jesse learned red bat care at The Bat Lab in Austin where he also recorded some of their calls. The red bat shown on the left was “Jackie”, Jesse's favorite red bat orphan.

 



Barbara is always interested in assisting graduate students interested in documenting bat behavior in non-invasive studies, by granting them access to bats at the The Bat Lab facility. Barbara can be reached regarding prospective projects at: batdoc@concentric.net

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