3 ms·From my understanding the bats only enter the library at night, hunt and leave.by simion314 7y agoFrom my understanding the bats only enter the library at night, hunt and leave.asguy 7y agoThe article says they make their home behind the book shelves of the library, and come out at night.simion314 7y agoThanks, my bad, I read the article but for some reason my mind created the wrong image.