I took the wreath off the front door to put a flag up for the 4th of July. When Scott was hanging the wreath back up the next day, he said, "Didn't you notice there was a bird's nest here?"
Somebody built a nest on the back of the wreath and laid a small, brownish, speckled egg in it. Maybe it was my mystery bird. We'll have to see who shows up when the egg hatches.