What I Learned Watching a Nest Empty Out This Summer

I put the birdhouse up two springs ago, on a whim, on a post at the back of the yard where I could just barely see it from the kitchen. For the first year, nothing happened. No visitors, no interest, just a small wooden box slowly weathering to gray. I’d more or less stopped looking at it by the time this spring rolled around.

Sometime in May, I noticed a chickadee going in and out with what looked like nesting material — moss, a few strands of something soft I couldn’t identify from a distance. I didn’t think much of it at first; birds check out cavities all the time without committing to them. But the visits kept happening, daily, at almost the same times each morning, and by early June I was fairly confident someone had moved in.

What followed was several weeks of trying very hard not to interfere. I know the general advice here — leave the box alone, don’t approach it more than necessary, resist the urge to check inside — and I mostly managed it, though I’ll admit to a few too-close walks past the post on my way to do something unrelated in that part of the yard. The adults were in and out constantly through most of June, which I’ve since read is fairly typical once there are chicks to feed — the frequency of trips is basically a direct read on how many hungry mouths are in there.

Then, over the course of about four days in early July, the traffic just stopped. One morning there were still adults making trips. A few mornings later, nothing. No dramatic last visit, no obvious “moving day” — just a gradual tapering off until the box was quiet again. I felt oddly unsettled by it for a day or two, which is a strange thing to admit about a wooden box I hadn’t thought about for over a year before this spring. It’s a good outcome — fledged chicks, a successful season — but the emptiness registered before the reasoning did.

I’ve left the box up and mostly alone since, though I know I’m supposed to clean it out before anything might reuse it next season, and I keep putting that off for reasons I can’t fully justify. Old nesting material can carry parasites and mites into the next occupant’s first days, which is exactly the kind of thing I’d feel responsible for if I let it slide. I think this weekend is actually the weekend.

If you’ve got a box that had visitors this year, the guide to cleaning a birdhouse between nesting seasons is a better source than my procrastination for what that cleanup should actually look like and when to do it.

Did anything nest in your yard this year? I’d like to hear how it went for you, especially if you were better than I was about not checking on it every day.