Last night I had to evict a bat from my house. Although I didn't examine it closely -- it wanted to be out of the house even more than I wanted it out, so I tried to grant its wish as speedily as possible
-- my best guess would be that it was a little brown bat. This is the second time in two years I've had a bat in the house. While that may not seem like a lot, I've lived other places for much longer without ever encountering an indoor bat.
Although I don't have any obvious holes anywhere, this is a very old house (100+ years). My attic doesn't have usable space and I never hear any noise in there or observe bats exiting, and both of these bats have been found in the downstairs living area. Does anyone know how large an opening a little brown bat might need to enter a house? I'd really like to spare the bats, myself, and my dogs and cats the excitement of another up-close interaction!
Jo Ann