I've seen October listed as "Bat Appreciation Month" and "Bat Awareness Month. Let's just call it "Bat Month."
Bats get a bum rap--generally because of the blood-sucking vampire bat and its association with Dracula and Halloween horror. Bat Conservation International is trying to reclaim Halloween for the bats by promoting the positive aspects of bats and moving the focus away from the vampire bat. Read more here.
We have many informational books on bats, most in the children's section. Here's a sampling: