Well...just last weekend we attended this Bat Fest in Austin, Texas, alongs with about 20,000 thousand other people and over 1.5 Million bats. But I don't have any pictures.
Wish I could have gone.
Although, I did find quite a nice antique chinese wood carving with legible hanzi (couldn't read most of it, though, except for a dating) and bats in its four corners (bats are a symbol of luck in china). I want it to hang on my wall!