Austin Texas has a huge colony of Mexican free tailed bats under their Congress Avenue bridge. I've never seen it for myself, but I hear at dusk it's spooktacular. Who'da thunk that an English dude would be interested in this particular phenomenon, but it turns out he's a member of a bat conservation thingy in England and he just so happens to have visited Texas to see it for himself. Tattooed at the Tattoo Jam in Manchester UK this August 2011.