I Have One Word For You--Birdhouse

I blew off all kinds of responsibilities to go hiking today, hitting four state forests in nine and a half or ten hours. The work never stops, though, because during one of my turns to drive (I read when I'm not driving--don't know where I am or what's going on) I noticed these bizarre tall poles along the side of the road in front of two houses. On the top of the poles were a variety of little wooden birdhouses. (Or they appeared to be wood from the road.) They didn't look very functional. The word "decor" comes to mind.

They'll be going into the 365 Story Project in a couple of weeks.

I am grateful to have come up with an idea that I'm quite certain I can use for a handful of segments. But I can't help but wonder--I was on the road or in the woods for around nine hours. Why the birdhouses? Why did that become an idea and not something else?