Correction: The bats eat about five to ten tons of insects each night, not ten to fifteen, according to BCI.
We went on the Austin riverboat for a sunset and the bats tonight. The weather was just clearing, so the clouds made a perfect backdrop for the Congress Street bat colony.
Bats in the sunset
Bats over the river
People on the Congress Street bridge to see the bats
I probably need to get a camera with a faster CCD sometime since ISO 100 mode is relatively limiting.
There are about 1.5 million bats living under the Congress Street bridge, and they eat about five to ten tons of insects every night.