What about bats?
I was sent to Kenya a few times for work. One of those times, we spent the nights in a big, chalet-type structure that was pretty much open to the outdoors. There was a large picture "window" on one side of the house that was just open air. No glass in any windows.
The beds were queen sized, with 4 posts so that mosquito netting completely surrounded each bed. About 3 AM each morning, I had to use the bathroom. Bats and other winged things would swoop right next to my head. I learned not to look at anything I didn't need to look at during these evening forays.
Anyway, one night I was enclosed in my mosquito tent bed. I could hear bats flying around in the room. Then it occurred to me that I could actually FEEL THE WIND from the bats's wings when they went by. That ain't right.
So I rolled to the side of the bed and ducked out of the mosquito netting. I picked up my flashlight and took a look at the bed. There were 4-5 bats furiously flying around in that small enclosed area. An area that used to include me, lying at the bottom of it.
So I pulled back the netting and hustled on over to the bathroom, taking my time so the fucking bats would have time to get the fuck out of there. They were gone when I returned.
I figure they must have decided my room was a cave, came in during the morning and "roosted," if that's what you call hanging upside-down, on the mosquito netting. It didn't occur to me to check for bats before enclosing myself. I'm also glad vampire bats are a South American species.