The curlew could be extinct in Wales within a decade
Along the wetland margins of Anglesey, where marsh and memory meet, the curlew — Europe's largest wader — still sends its trembling call across the reeds, though perhaps not for much longer. Sustained breeding failure has left Wales's curlew population so depleted that ornithologists warn of local extinction within a decade without urgent, holistic land stewardship. The reserve at Cors Ddyga offers both a model and a measure: proof that careful conservation can coax lost species back, and a quiet reckoning with how much faster some creatures slip away than we are able to reach them.
- Wales's curlew population has aged and thinned to the point where the British Trust for Ornithology now speaks of extinction within ten years — not as a distant warning, but as a near-term probability.
- Breeding failure, not a single catastrophe, is the quiet engine of collapse: year after year, too few chicks survive to replace the birds that are lost.
- Cors Ddyga demonstrates that recovery is possible — bitterns absent for 32 years returned in 2016, and marsh harriers and warblers now thrive where they once did not — but the curlew's decline continues even here.
- World Curlew Day on April 21 is being used to focus public attention and political will on the land management changes that conservationists say are the only path away from local extinction.
- The stakes feel larger than population numbers: the curlew's call, described by those who hear it as the marsh itself given voice, represents a kind of wildness that, once silenced, leaves a particular and irreplaceable absence.
The lane down to Cors Ddyga, an RSPB reserve on Anglesey, descends through changing plants and thickening marsh air before opening onto a broad wetland where the reeds catch the last of the evening light. On a recent visit, the reserve was layered with sound — willow warblers, Cetti's warblers, reed warblers, a rattling water rail — and two bitterns boomed in stereo from either side of the path. Those bitterns matter: they had been absent from Anglesey as breeders for 32 years before returning in 2016, a quiet testament to what careful land management can achieve.
Above the reeds, a male marsh harrier climbed and fell through his courtship display, cutting through clouds of sand martins and past a roost of several hundred wagtails still undecided about where to settle. Then, as darkness approached, another sound arrived — far, bubbling, unmistakable. A curlew, Europe's largest wader, slid half-seen into view, trembling with the effort of its call, and for a moment seemed to give the marsh itself a voice.
That voice is in danger of falling silent. Across Wales, sustained breeding failure has left the curlew population dwindling and aging. The British Trust for Ornithology warns that without significant changes in land stewardship — the kind practiced at Cors Ddyga — the species could be extinct in Wales within a decade. World Curlew Day on April 21, which also honors Saint Beuno, a sixth-century abbot remembered for his care toward the natural world, is intended to sharpen that awareness into action.
Cors Ddyga is proof that conservation works. But the curlew's decline is a reminder that even in places where the land is well tended, some species are slipping away faster than we can reach them — and that their loss diminishes something in the landscape that cannot easily be named or replaced.
The lane drops steeply toward the marsh, and as you walk it in the fading light, the plants change beneath your feet—moschatel giving way to meadowsweet, the air thickening with the smell of water and growth. Then the track opens onto the broad wetland, and the reeds catch the last of the sun's brightness, and you feel the way a player must feel emerging from a tunnel into a stadium of light.
This is Cors Ddyga, an RSPB reserve on Anglesey in Wales, and on a recent evening visit, the place was alive with birds. From the reedbed came the calls of willow warblers, Cetti's warblers, sedge warblers, reed warblers—a layering of sound that sometimes matters more than what you can see. A water rail made its sharp, rattling cry. Two bitterns boomed in stereo, one on either side of the path, their deep voices carrying across the water. These birds had been absent from Anglesey as breeders for 32 years before returning in 2016, and their presence here now is a small victory for the reserve's work.
Above the reeds, a male marsh harrier performed his courtship display, climbing and falling through the air with acrobatic precision, his feathers catching the last rays of sun. He cut through a band of chittering sand martins, then slipped past a gathering of several hundred white and pied wagtails—more of them roosting together in the reeds than the observer had ever seen before, rising and falling in the dusk, still undecided about where to settle for the night.
But as darkness approached, another sound cut through the marsh soundscape: a far, bubbling note, distinctive and unmistakable. The bird that made it slid half-seen into view—a curlew, Europe's largest wader, trembling with the effort of its call. In that moment, the bird seemed to capture something essential about the place, the marsh itself given voice. Yet this is a species in crisis. Across Europe, curlews are declining steeply. In Wales, sustained breeding failure has left the population dwindling and aging. According to the British Trust for Ornithology, without significant changes in how the land is managed—the kind of holistic, careful stewardship that Cors Ddyga practices—curlews could be extinct in Wales within a decade.
It is no accident that World Curlew Day falls on April 21, a date that also honors Saint Beuno, a sixth-century abbot from the region whose generosity toward the natural world, and toward curlews in particular, feels like something that needs to be remembered and rekindled now. The reserve itself is proof that such care works: bitterns have returned, warblers nest in the reeds, harriers dance in the sky. But the curlew's decline is a reminder that even in places where conservation is working, some species are slipping away faster than we can save them. There is something about the curlew—its call, its presence, the way it seems to belong to wild places—that makes its loss feel like a particular kind of diminishment.
Notable Quotes
The curlew captured the essence of the marsh, yet Europe's largest wader is in steep decline— Observer at Cors Ddyga reserve
Without more of the kind of holistic land management nurtured at the reserve, curlews will be extinct in Wales within 10 years— British Trust for Ornithology
The Hearth Conversation Another angle on the story
What made that curlew sighting matter so much, given all the other birds you saw that evening?
Because it was rare. The bitterns were a triumph—they'd been gone for decades. But the curlew felt like witnessing something that might not be here much longer. The call itself is haunting. Once you hear it, you understand why people care.
The reserve seems to be working well for other species. Why is the curlew failing where other birds are recovering?
That's the hard part. The reserve can create the right habitat, but curlews need more than that. They're breeding less successfully across the whole region. It's not just about one place doing things right—it's about systemic change in how we manage land everywhere they live.
Ten years seems like a very specific timeline. How confident is that prediction?
The British Trust for Ornithology is careful with their numbers. They're saying that without major intervention—real, holistic changes—that's the trajectory. It's not a certainty, but it's a warning that should be taken seriously.
What does holistic land management actually mean in practice?
It means thinking about the whole ecosystem, not just protecting one species. It means managing water levels, controlling predators, leaving the right kind of vegetation. Cors Ddyga does this. But most of the landscape doesn't.
Why invoke Saint Beuno at the end? What's the connection?
He was local, and he apparently had a deep regard for the natural world and curlews specifically. It's a way of saying this isn't new—people have cared about these birds for centuries. We're not inventing conservation; we're trying to remember it.