The land near Bruton in Somerset had been wrung out for decades. Rye-grass monoculture. Heavy clay compacted by machinery. Three tributaries of the River Frome run through fields that had almost nothing living in them worth counting. When Heal Rewilding acquired the 460-acre site in December 2022 and simply stopped farming it, nobody was certain what would come back. Three years later, the answer has surprised even the scientists running the surveys.
Passive restoration. That is the term ecologists use for what happened at Heal Somerset. No tree planting. No species reintroduction programs. No expensive intervention. Just the withdrawal of human management and the radical act of waiting. What the land did next has become one of the most closely watched rewilding experiments in Britain, and the findings published in June 2026 in Heal’s inaugural State of Nature report carry implications that reach far beyond one farm in east Somerset.
The Numbers That Stopped the Conversation
Thirty-five surveys have been carried out at Heal Somerset since the acquisition. The five formal baseline surveys alone documented 60 breeding bird species, 15 bat species, 404 invertebrate species, and 113 vascular plant species on a piece of land that, not long before, had been an agricultural monoculture in a country where that designation usually means ecological silence.
The small mammal comparison is the figure that hits hardest. Heal’s first comparative baseline survey set Heal Somerset against a nearby organic dairy farm and found five mammal species on the rewilded land against three on the working farm. Abundance, the actual number of animals present, showed 188% more individuals at Heal Somerset, with 49 small mammals recorded against the dairy farm’s count. This was not a marginal difference. This was a different ecological world, visible three years after the tractors stopped.
Bird species recorded across the full site have moved from 67 to 94. Butterfly species have more than doubled, from 11 to 24. According to the UK government’s official wild bird population statistics, farmland bird populations across the country have declined by 62% since 1970. In that context, a single former dairy farm adding 27 bird species in 36 months is not a footnote. It is a provocation.
Then the beavers arrived.
Nobody Planned for the Beavers
They were not introduced. No permission was sought, no reintroduction programme designed, no habitat specially prepared. Wild-living beavers appeared in a tributary of the River Frome running through the Heal Somerset site just over a year after Heal acquired the land. By 2026, two family groups had established themselves in and around the site.
Jan Stannard, co-founder and acting CEO of Heal Rewilding, said when the discovery was announced: “Seeing these ecosystem engineers on our land is the most exciting wildlife event since we arrived at the site. They are a sign of nature taking back some control and could provide a crucial first step for natural processes to take shape.”
The significance is not rhetorical. Beavers are what ecologists call a keystone species, meaning their presence reshapes the habitat for dozens of other species simultaneously. Their dams slow water flow, creating wetland areas and standing water that invertebrates, amphibians, and birds depend on. They generate dead wood, which hosts specialist beetle communities that almost nothing else can sustain. A single beaver family does more structural habitat work in a year than years of targeted conservation management. They arrived uninvited. They started building.
Eva Bishop of the Beaver Trust noted that the beavers’ arrival through natural dispersal, rather than reintroduction, demonstrated how adaptable and mobile the species is when given connected habitat to move through. The beavers did not appear because Heal Somerset called them. They appeared because something in the land had changed enough to make it worth arriving.
What Was Always There, Waiting
Understanding what happened at Heal Somerset requires understanding what intensive dairy farming does to land, and how completely it suppresses the ecological processes that would otherwise be operating.
Modern dairy pasture maintains a monoculture of fast-growing grass species through repeated cutting, heavy grazing pressure, and fertiliser application. The result is a landscape that looks green from a distance and functions like a desert at the level of insects, soil organisms, and small mammals. There are no structural variations for ground-nesting birds. No wildflower margins for pollinators. No standing deadwood for beetles. No wet areas for amphibians. The hedgerows that remained at Heal Somerset were present but had been managed to hedgehog-height tidiness that eliminated their wildlife function.
When that management ceased in early 2023, the land did not sit inert. The seed bank in the soil, the dormant root systems, the hedgerow species waiting for light, the insects in adjacent habitats watching for an opening, the mammals in surrounding land checking whether it was safe to move in, all of these processes began activating within weeks. The 404 invertebrate species documented at the site did not arrive from nowhere. Most had been suppressed, locally or regionally, waiting for conditions that would allow them to function.
Heal Somerset’s site was not chosen because it was particularly good land. It was chosen, in some respects, because it was particularly degraded. The charity was explicit about this when acquiring the farm. If nature could recover here, the argument for rewilding would scale dramatically. The same logic that underpins efforts to address where 1.2 billion climate refugees are headed by 2050 applies here at a local level: when you remove the pressure, the system begins to repair itself, faster than almost anyone predicts.
They Have a Point, Partially
Critics of rewilding projects like Heal Somerset raise concerns that deserve serious engagement rather than dismissal.
The most substantive argument is about food production. Britain imports roughly 40% of its food, and the political pressure to reduce that dependence has intensified alongside supply chain disruptions and geopolitical instability. Taking productive agricultural land out of farming, even degraded dairy pasture, feeds a legitimate anxiety about food security. Every acre rewilded in Somerset is an acre not producing food for a country that already relies heavily on imports. The arithmetic is real.
There is also a legitimate question about scale. Heal Somerset’s results are striking, but 460 acres in East Somerset is not a policy. The UK ranks 189th out of 240 countries and territories for biodiversity intactness, according to the Natural History Museum’s Biodiversity Intactness Index. Reversing that requires landscape-scale intervention across millions of acres, involving the active cooperation of the farming sector, not individual charity land purchases.
And rewilding is not a static outcome. An abandoned field does not become a productive ecosystem and stay that way without ongoing monitoring, management of invasive species, and attention to the processes unfolding on the land. Heal acknowledges it cannot yet monitor every ecological process at the site. Passive restoration requires active attention, just of a different kind.
These are genuine concerns. But they do not explain away the data. The 404 invertebrate species at Heal Somerset were not imported. They were already regionally present, suppressed, and waiting. The question is not whether rewilding works. Heal Somerset is one of several projects that have now demonstrated that it does. The question is whether Britain has the political will to do it at the scale its biodiversity crisis demands.
The Deeper Problem Heal Somerset Is Answering
England’s nature emergency is not a recent development. Farmland bird populations declined by 62% between 1970 and 2024, with a further 13% drop recorded between 2019 and 2024 alone, according to the RSPB’s analysis of DEFRA data. Turtle doves have lost more than 90% of their population. Grey partridge numbers have collapsed. Corn buntings, lapwings, yellowhammers, skylarks, all of them registering declines that have continued through decades of policy attention, agri-environment schemes, and conservation funding.
The scale of that failure is worth sitting with. The UK spent billions on farming subsidies that included environmental requirements. The birds kept declining. The invertebrates kept declining. The hedgerows kept being cut in winter when birds need them most. The pesticide use continued. The heavy machinery kept compacting soil that would otherwise allow the invertebrate communities on which farmland birds depend for food.
Against that backdrop, Heal Somerset’s 188% increase in small mammal abundance relative to a working farm in three years is not simply a conservation success story. It is evidence of something structural: that the model of land management Britain has pursued since the 1950s is itself the primary driver of the collapse, and that the land retains the capacity to recover when that model is removed.
Jan Stannard put it plainly at the project’s launch: “The only way for nature to recover is for it to have more room, more space dedicated to it. It can’t just be the edges of farmland, but new dedicated spaces are fundamental to nature’s recovery.” That is not a charitable sentiment. It is a reading of the evidence, and the evidence in Heal Somerset is adding up in one direction. Research into how neuroscience and environmental exposure interact with human wellbeing increasingly points to biodiverse landscapes as a public health asset, not merely an ecological one.
What Three Years Actually Prove
The Heal Somerset State of Nature 2026 report is careful about what it claims. Heal acknowledges the limitations of its data set, the relatively short timeframe, the absence of pre-acquisition baseline surveys for some species groups, and the small organisational capacity that makes comprehensive monitoring difficult. The report is designed as the first in a long-term series, with updated editions planned every four to five years. Heal intends to contribute data to the UK’s national State of Nature process, with the next national report expected in 2027.
What three years prove is the speed of recovery when the pressure is removed. Not the final destination, not the full ecological complexity that will take decades to re-establish, but the velocity. The land moves fast when you let it.
That velocity matters for policy. The argument against rewilding has often rested on the assumption that ecological recovery is slow and uncertain, making investment in it difficult to justify over shorter political timeframes. Heal Somerset challenges that directly. Sixty breeding bird species. Fifteen bat species. A doubling of butterfly diversity. Two beaver family groups arrived without assistance. This happened in 36 months on what was, by any measure, degraded agricultural land producing monoculture grass.
The broader push to decarbonise energy systems, which the green energy revolution is beginning to deliver at an industrial scale, has an underappreciated land-use dimension. Rewilded land sequesters carbon in soil and biomass. It restores hydrological function, reducing flood risk downstream. It rebuilds the pollinator communities that agricultural productivity itself depends on. The argument for rewilding is not in tension with the argument for a functioning food system. Properly understood, it is part of the same argument.
The Land Near Bruton Is Still Accelerating
Heal Rewilding’s ambition is to acquire a roughly 500-acre rewilding site in every English county by 2050. That is a long road. England has 48 ceremonial counties. The political and financial conditions for achieving that scale of acquisition do not yet exist.
But the argument for trying has just become considerably harder to dismiss.
The land near Bruton in Somerset was wrung out. Now the beavers are building dams in their rivers, 404 invertebrate species are working through their soil, and 60 breeding bird species are nesting in hedgerows that three years ago held almost nothing. According to RSPB data on England’s farmland bird populations, the national trend is still moving in the wrong direction, with a 13% decline recorded between 2019 and 2024 alone. Heal Somerset is a single site pushing back against a national collapse.
Nature did not wait for permission. It came back the moment the farming stopped. The only question now is whether anyone in a position to act is paying attention.
