Had a Merlin get into my greenhouse today. I had the door open to clean it out and left it for a while. What he thought was in there is known only to him. He panicked, of course, and couldn't figure out how he got in. FYI, it does not help to open the door and expect him to find it. I finally had to crawl under him to get opposite the door and let his terror of me do the rest. He seemed not to be the worse for wear as he headed nearly straight up after exiting. \
I wondered where all the titmouse feathers were coming from around the feeders. Now I know.