We attended a concert at Vassar College and found this fellow flitting about an upstairs hallway in Skinner Hall. He eventually settled down atop a door frame and I took this picture from across the hall; it’s a tiny crop from a much larger image because I didn’t want to spook him.
He’s most likely a Little Brown Bat and perfectly harmless. Anybody who can eat that many insects gets a free pass from me!
He was at least as scared of us as some of the students were of him. Flying in a hallway full of running people must be bewildering…
Somebody called Campus Security and I suppose they wiped the little guy out during the second part of the concert.