A neighbour of mine happened to receive an unusual visitor one night. A small owl, probably a Spotted Owlet, flew into their house and couldn't get out. Eventually they caught it and tied its leg onto a chair with a string and left it there for the night. The very next morning, I was informed. I walked across and they showed me the owlet. It was small, just a bit bigger than my palm, and closed its eyes all the time. Maybe the morning light was too much for it's eyes?
Here is one rare shot with its eyes open.
I took it home, where I kept it in a dark and warm, well-ventilated container. When evening came, I got him out, and let him sit on my palm. He sat there for a while, and upon realizing it was dark and that he was free, he hopped out and flew away. I felt happy for him as he flew off.