The momma bird built and used it last year, then took off for the summer. A large wolf spider moved in. By fall, the spider was gone and the wren was back. She spent the winter sleeping in it, head first. It is right under our porch light, so we could see her breathing in slumber.
As the nights began to warm in early spring, she took to sleeping in the pecan tree. We were able to use her to forecast the occasional nightly freeze--on those nights she was back in the nest as soon as the setting sun hit the trees. How is it that Nature innately knows what we must build machines to tell us? Living in the country I have begun to relearn what people have forgotten by living in cities.
We knew she was setting eggs when she started sleeping with her head facing out. She gave us an inconvenienced look every time we passed in and out, so we tried not to make eye contact. Complete strangers at the door, however, would be surprised when she escaped within inches of their faces. That's pretty neat that she knows and trusts us.