The Silence Is Accelerating
A landmark study just told us something we should have been screaming about for years. We're not just losing birds — we're losing them faster. Here's what that actually means.
My wife and I have moved a lot over the past ten years. Different houses, different towns, different neighborhoods — but one constant has followed us to every backyard: the birds. Platform feeders, nyjer feeders, suet feeders, all of them full through the winter to keep the year-rounders fed. And every spring, there is a morning when it happens — the full chorus, every voice at once, the air so thick with song you stop whatever you're doing and just listen. We've learned to count on it. Their chorus is a bit quiter now.
The pre-dawn chorus has thinned. The red-winged blackbirds along the marsh edges — still there, but not in the numbers my memory holds. The bobolinks in the fields off Old King’s Highway. There, but diminished. I spent years wondering whether I was noticing something real or projecting nostalgia onto a landscape that was simply changing in ways I didn’t understand.
A paper published February 26, 2026, in the journal Science tells me I was noticing something real.
The Numbers
Researchers at Ohio State and the Czech University of Life Sciences analyzed 35 years of data from 1,033 bird survey routes across North America, covering 261 species. They didn’t just ask whether bird populations were declining, they asked whether the rate of decline was changing.
It is.
Nearly half of all tracked species showed significant population losses. But the more important number: of those declining species, more than half are losing birds at an accelerating rate. They are not just falling. They are falling faster.
Continent-wide, total bird abundance dropped 15 percent from 1987 to 2021. The hardest-hit areas for raw losses are Florida, Texas, and the Southwest, consistent with rising temperatures shrinking viable habitat.
But the acceleration hotspots tell a different story. The Midwest. The Mid-Atlantic. California. Not the hottest places on the map. The places where the land is most intensively farmed.
Two Crises, One Headline
This is what makes the study significant: it separates two overlapping problems that we’ve been collapsing into one narrative.
Climate change is driving population losses. Industrial agriculture is driving acceleration.
Different mechanisms. Different geographies. Different solutions.
The team tested 20 environmental variables. The strongest predictors of accelerating decline were cropland extent, fertilizer use, and pesticide application - not temperature, not precipitation, not urbanization. Lead author François Leroy put it plainly: “The stronger the agricultural intensity, the stronger the acceleration of the decline.”
The primary suspect is neonicotinoids, systemic pesticides absorbed into every part of the crop plant, making it continuously toxic to insects. Insects that birds feed their chicks. Without that food base at the right moment in the breeding season, chick survival collapses regardless of how healthy the adult population looks.
A 2024 meta-analysis synthesizing 49 separate studies found neonicotinoids harm bird health, behavior, reproduction, and survival through both direct toxicity and food web collapse. A single coated corn kernel can kill a songbird. France banned neonicotinoids in 2018, and a 2025 study found the birds still haven’t meaningfully recovered. The chemicals persist in soils and water long after the application stops.
The Part That Should Alarm Everyone
The species declining fastest are not rare warblers with narrow habitat needs. They are common grackles, red-winged blackbirds, American crows, house sparrows. The “trash birds.” The ones whose populations were always large enough to seem indestructible.
Cornell conservation scientist Kenneth Rosenberg put it this way: if the environment can’t support healthy populations of these extreme generalists, species that tolerate humans, thrive in degraded habitats, live alongside industrial agriculture, then that environment is toxic. Not just to birds. To everything, including us.
This is the canary in the coal mine, except the canary is the crow, and the crow is struggling.
The silence in the morning isn’t peaceful. It is a measurement.
François Leroy offers this: “Biodiversity is very dynamic. If we act, we will see the impact in our lifetime.”
We’ve done it before. DDT nearly destroyed the bald eagle. We banned it. The eagles came back. The mechanism driving this collapse is known. The tools to address it exist. What’s missing is the political will to treat neonicotinoids the way we eventually treated DDT, not as an agricultural inevitability, but as a choice we’re making, and can stop making.
Every morning I walk the marsh, and I listen for what isn’t there anymore. It’s getting easier to hear.
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Citations
Leroy, F., Jarzyna, M.A., Keil, P. (2026). Acceleration hotspots of North American birds’ decline are associated with agriculture. Science, 391(6788), 917–921. https://doi.org/10.1126/science.ads0871
Rosenberg, K.V., et al. (2019). Decline of the North American avifauna. Science, 366(6461), 120–124. https://doi.org/10.1126/science.aaw1313
Molenaar, F.M., et al. (2024). Neonicotinoids impact all aspects of bird life: A meta-analysis. Ecology Letters, 27(10), e14534. https://doi.org/10.1111/ele.14534
Perrot, T., et al. (2025). Weak recovery of insectivorous bird populations after ban of neonicotinoids in France. Environmental Pollution, 385, 127132. https://doi.org/10.1016/j.envpol.2025.127132
So important. I started to read an article this morning, but lost it, as I moved on to something else and tried to come back to it. It had a terminology that is valuable, but all I remember is one concept. Basically, we establish a baseline regarding our perception of nature, especially birds, when we are young. Abundance, diversity, etc. If we live long enough, we might notice changes in that baseline, but they are subtle to the human experience. That's why we need longitudinal data. Each generation establishes its baseline, but across generations, the baseline moves, and changes aren't perceived. Like the proverbial frog in increasingly hot water. Thanks for this. And we need to always remember, just because it's like this now--it doesn't have to be this way. We can change it. We are going to have to force this change through action, resistance, and voting.
Chris, I have said for 25 years the Robin, redwing black bird, Cardinals, quail, pheasant population are dropping in Southern Iowa. People said it was my imagination. Thank you for validating my observations.
John Coulter, Creston, Ia