Haven't had that happen yet.
I'll bet the first time it was a big surprise!
Meant bird house. First time was when we were all sitting at the table eating lunch and I looked out the window to see something stick it's head out and then back in. I went out to see what it was and saw the forked tongue come out. He was about 4 to 5 feet when he came out. This has happened 5 times that I have caught. They are either after birds, eggs or flying squirrels.