Wow, 2 million is a lot of bats...and bat shit! No wonder the smell was so bad. I like the sound of 'cauldron of bats' too, it just sounds more fitting. I really love the shot of the bat looking straight at the camera (8ith pic up, I think), though all of the shots are great. I have a few bats that live on my property and they fly out at dusk every night. It's nice to have them here, eating up those skeeters :D