So I was outside my house last night and ended up out there for two hours, I counted 249 bats flying out of my attic and that's not including the ones that had already left and the ones that left after I went inside (including them I am guessing 300+ bats)! I am staying up tonight until sunrise to watch them all trying to get back in, I'll try to get some pictures to post them.
In Ireland it is illegal to do anything about it but it is only a summer breeding roost so they should be leaving at the end of August. I worked out that if every female have 3 young this season (the most the will have in 1 season) then there will be 900+ bats leaving by the end of the summer, I can't wait to see it!
Anyway I just thought I would share because I think it is pretty win! XD