This was already attached to a tree when we moved in. I though it odd that the hole was in the bottom. However, I've since learned that it's where certain birds like to have their door. I don't know which birds. I wish I could see inside.
"Seeing, in the finest and broadest sense, means using your senses, your intellect, and your emotions. It means encountering your subject matter with your whole being. It means looking beyond the labels of things and discovering the remarkable world around you." ~ Freeman Patterson
"A good snapshot stops a moment from running away." ~Eudora Welty