So funny, Allison. I often wonder that about bird houses. Is it really all about the size of the hole. They don't consider anything else? Nice capture.
I love this. Yup, if I were a bird and saw this home I would get in there and make a nest. I don't see a bird rest on it, though. We have decorative (though rustic) bird houses on our front porch. The birds flock to them so Gary made the holes bigger for them. We're watching to see who comes to make a home in them. =)
http://www.rspb.org.uk/wildlife/birdguide/name/b/bluetit/index.aspx