The Silence of the Wrens

I’m a fan of wrens, in general, and House Wrens, in particular.

Busy, grumpy, and brash, these little birds make a big presence in the yard.

The yard’s House Wrens are attentive and productive parents. (One little male was over-attentive, to the point of feeding nearby cardinal nestlings.) These little birds appreciate the nest boxes I make, which gives me incentive to make more nest boxes. It’s nice to feel like I’m contributing to the cycle.

Photo of a small brown-mottled House Wren perched in mown grass and weeds. The little bird has a vague pale stripe, over and behind its eye, and a slightly down-turned beak, giving it the appearance of frowning.
Perhaps it’s just the eyestripe, but SO GRUMPY.

The House Wren cycle starts each spring, when the males show up. After a bit of territorial wrangling, a dominant male settles in and claims all the wren-sized nest boxes.

All the boxes.

The males add a touch of twig-and-duff bachelor furniture to each box, then they start singing.

Loudly.

Video of House Wren activity, from 2013. A little bit of chasing and arguing, a little bit of nest building, and a lot of singing. Loudly.

Such big songs, from such little birds.

When females arrive, the males go all out. Extra singing. Extra everything, including a high-pitched whistle almost above my hearing range.

The males dash around, showing off their boxes and bachelor furnishings, lingering at their favorite box, switching favorites in a heartbeat if the females favor a different box.

The females mutter and fuss, inspecting each location according to their own private checklist, ignoring the males’ antics. Eventually, one of the females chooses one of the boxes, and the real work of nest construction begins.

The female wrens scour the yard and pollinator beds for just the right materials, in just the right sizes. They stuff their chosen box with twigs and dry grass, moss and spider webs, muttering as they work. Scolding squirrels and photographers who venture too close. Scolding the male wrens, too, if they pop into the box for a glimpse of fresh decor.

The females haul and grumble, while the males twitter and sing.

It’s all very overt and conspicuous.

And then, on some future day, the nest wakes with its own song. A hungry song that grows louder each day.

Video clips from June, 2025, of a House Wren nest box in the yard. Clips start when the nestlings are very small, with very small voices inside the box. The final clips are from days just prior to fledging, when the nestlings have louder, harsher voices and have begun lingering in the doorway, ready to fledge.

Through it all, the male wrens sing.

Loudly.

Photo of an adult House Wren flying away from its nest box. The photo is captured from beneath the box, with bright sunlight filtering through the surrounding leaves of our live oak tree. The bird's wings are spread, primaries translucent against the bright background of sky.
Off for more foraging.

Which is why I surmise that the missing parent, from last June’s nest, was the male.

When I found a little House Wren body, near the nest, time had already erased its cause of death. All that remained were traces of recent life. Feathers. Stiffening limbs. Breathless silence.

The yard’s sudden silence was sad enough, without the knowledge of near-hatching eggs in the nest box.

[Look away or scroll quickly, if you don’t want to see his death photo.]

[It’s not gory. There’s no blood or open body cavities. Even so, I understand that acceptable levels of gore and/or death imagery are best judged by readers, not bloggers. It is, after all, death.]

[It’s the next photo…]

Photo of a fallen House Wren in the yard, surrounded by grass, weeds, leaves, and a few empty peanut hulls left by the squirrels and blue jays. The wren's body is intact, complete with its beautiful mottled-brown feathers.
Poor little dude. Nature is unavoidably brutal.

A quick internet search yielded little information about House Wren nest success, after the death of a parent bird. (Please post in the comments, if you know where such information exists.) Anecdotes abound—stories of successful nests tended by a single parent, stories of abandoned nests, stories of new partner birds destroying eggs and chicks.

While I mulled over anecdotes, the eggs hatched. Playing out a new anecdote, the single un-singing wren hunted and foraged and flitted around the yard, shouldering the work of two.

Soon the pollinator beds were stripped of caterpillars, and the wren was dodging off into nearby yards, expanding her search grid. Further and further she commuted, with longer and longer gaps between visits to the nest.

Photo of a House Wren perched in the doorway of its nest box. Two hungry beaks are waiting in the doorway, gaped open to beg for the morsel of food the parent has brought.
So busy. So hungry.

As I’ve noted before, I’m a hopeless meddler. When the yard’s cycles get disrupted, I try to help.

Only the wren knows whether or not she needed help, but I was determined.

In the end, I opted for supplemental feeding in the form of meal worms.

I first offered dried meal worms (they were the easiest and least expensive option). The little wren never even glanced at my offering. Dried meal worms were not on her family menu.

My next option was live meal worms.

I struggled with empathy, as I spooned meal worms from their pet-store cups into the wren’s dish. The feeder-rack meal worms were, after all, trying to live their own best lives. Who am I, to exercise such control over living things? I have no answers, only a hierarchy of perceived need in which the wrens won that particular moment.

Meal worm empathy aside, now the wren and I were on the same page. Live meal worms, dished up just beneath the nest, were (apparently) a welcome addition to the nestlings’ diet.

Photo of the House Wren taking a meal worm from a glass dish placed at the foot of the live oak tree. The little bird's wings and tail feathers are spread, for balance, as she reaches down into the dish.
Shortening the wren’s commute for food. Calories acquired, calories saved. In the yard, calories are currency.

I couldn’t afford to offer around-the clock meal worm service, nor did it seem healthy for the nestlings. I opted for two or three servings a day, each serving made up of eight or nine small-to-medium meal worms.

After the second day, the wren would see me heading for the shed and pause her work, waiting beside her dish. Not singing. Just waiting.

Photo of a House Wren leaning far out of her nest box, peering downward.
She’s looking at the bowl, in this photo, because she expected a serving of meal worms.
Photo of the House Wren perched on the flared root of a live oak tree, peering into a glass bowl beside the root. The alert little brown-mottled bird was looking for a meal worm meal for herself and her nestlings.
Order up!

The wren fed the meal worms to her nestlings, but not without modification. She had a routine of taking a meal worm from the bowl, smashing it violently against the tree root, then carrying the stunned worm to a nearby row of landscaping bricks, where she did more smashing and bashing, along with some selective dismemberment.

[Nature violence, in the next video, which shows the House Wren’s meal-prep routine.]

Video clips of a House Wren taking meal worms from a glass dish beneath her nest, then prepping the meal worms on nearby landscaping bricks before feeding them to her nestlings.

When the wrens fledged and followed their single un-singing parent away from the yard, I tried to gain some objectivity.

Had I really helped? (Probably not.)

Would the wrens have survived and fledged, without the meal worms? (Probably.)

How would these young wrens learn to sing, without a singing parent? (Good question. Please comment, if you know the answer.)

Of course, I’ll never know if my “help” really helped. I want to believe I helped, in no small part because I want to believe that the meal worms died for a healthy (helpful) purpose.

Photo of a House Wren nestling peering out of the door of its nest box. The little wren already has adult plumage, though it still has the yellow beak margins of a hungry nestling.
Hello world! I’m almost ready to fledge!

All I know, for certain, is that the nestlings fledged and followed their un-singing parent into other adventures, in other yards.

Adventures that may (or may not) be influenced by a taste for (or aversion of) meal worms.

As always, let me know if you see them.

Photo of a House Wren nestling leaning out of the entry hole of its nest box. The nestling is ready to fledge and looks almost like an adult bird, though it still has the bright yellow beak margins of a nestling.
One of the things I most looked forward to, growing up, was the idea of eating all of my favorite foods, all the time. Needless to say, adulthood hasn’t worked out the way I imagined. I wonder if the same is ever true, for birds?

The Nest Box

One of the first purchases we made, after moving into our house, was a nest box for the back yard. Much to my disappointment, summer after summer passed with no nests. Then I ran across an article (I can’t remember where) that said birds prefer nest boxes positioned so the entrance faces north. With nothing to lose, we moved our unused nest box. Immediate success.

A pair of chickadees!

I spent many happy hours watching them stuff the nest box with pear petals and moss. But something went wrong and the nest failed. Later, when we cleaned the box, two tiny unhatched eggs made me want to cry.

In subsequent springs, we’ve watched more chickadees build more nests in the box, and all have failed. Only once did we know why. Bumblebees.

Now I’m tempted to take down our nest box, as it seems a source of great disappointment for both the birds and myself. But I suppose the bees need a place to nest, too. Maybe I’ll leave it one more year…