We have bats. We know that. We like the bats. We heard a bunch of bats making some racket today up on a ledge near the roof of the barn...on the front side of the barn, not where they usually are which is on the backside of the barn. A couple of hours later, they were all on the ground...and a 3 foot black snake was where they WERE. 12 in all. Two had hair (adults) 11 were bald (youngin's). One either didn't survive the fall or was already dead. So, 11 into a box and in a somewhat safer spot in the barn. The black snake taken far away (at least to buy the bats enough time to relocate come nighttime. Cute little buggers...mice with wings. BTW, yes we have a bat house on the barn, but in 8 years, I don't think it has EVER been used.