Wow. The largest urban bat colony in North America put on a fine show last night!
As part of Pack 55’s summer activities, some of us gathered at the Congress Avenue Bridge to bat-watch (and play in the sprinklers…). Although this isn’t peak bat-watching season — August, when the babies begin to fly, is reportedly the best time of year — it was still mighty impressive when they began streaming out from under the bridge. Which they obligingly did before it got too dark to see them. At one point, I looked up into a cloud of bats flitting by overhead (yes, I was tempting fate but it worked out OK) and felt like I was in the middle of a snowglobe that had just been shook up. Equally impressive were the columns of bats streaming out from under the bridge at an amazing rate. Very cool!
Here are some interesting facts about bats, courtesy of the Bat Conservation International webpage.
In 1980, when engineers were reconstructing the Congress Avenue bridge, they inadvertently wound up redesigning it into an ideal roost for bats. Bats had always lived around the bridge, but once the construction was done they started arriving by the thousands (word of mouth I guess). This worried a lot of people until they found out that the bats consume a staggering 10,000 - 20,000 pounds of insects on their nightly flights! Suddenly they became much more desirable neighbors. Bat Conservation International played a large part in helping Austinites to understand much more about these fascinating little animals. From being considered a nuisance, the bats have evolved into a major tourist attraction for Austin, and generate millions of dollars for the economy. Austin’s bats are Mexican free-tailed bats, which are migratory: they head south to Mexico in October and generally return each March to the bridge. Babies are born in June and July and by August are flying and ready to do their part to lower Austin’s mosquito population.
For those of you who can’t get enough of bats, check out the 4th annual Batfest 2008, coming up August 30-31.




