It was a sweet little wren or something. I closed all the blinds and left the door open, it flew out, a little shaken up is all!
Good it flew out right away! I had some sparrows stuck in the garage for weeks earlier this year. I couldn't catch them because they'd just fly up in the rafters, and if I opened the door or windows they were too scared to fly out with me standing there, but I couldn't leave for fear of other birds coming in. I was afraid they'd starve, but I put water out for them, and I guess there were enough bugs for them to live on. Finally one day I managed to get them to fly out.