Red-eyed dust bunny
I see it occasionally. It's more commonly used for aquatic animals, but it's correct for bats as well.And then they say that bats use sonar! I guess sonar doesn't exclude non-marine use, but I have never seen it being used out of that context.
Of course, I just finished the book where the author called bat echolocation "radar", which is just flat-out wrong. (And the author is Ph.D. zoologist from Oxford, of all things.)