What Is Rewilding?

Rewilding is an approach to conservation that focuses on restoring natural processes and, in some cases, reintroducing species to allow ecosystems to regulate themselves. Rather than managing nature as a static, controlled environment, rewilding embraces dynamism — letting rivers flood, forests regenerate, and predator-prey relationships function without constant human intervention.

The concept ranges from small-scale habitat restoration — removing fences to allow natural plant succession — to ambitious multi-decade projects involving the return of apex predators to landscapes where they were once hunted to extinction.

Why Does Rewilding Matter?

Modern landscapes across much of the world are profoundly impoverished compared to their natural state. Intensive agriculture, urban expansion, drainage of wetlands, and centuries of hunting have created what scientists call "shifting baseline syndrome" — each generation accepts a less biodiverse landscape as normal, not realising what has been lost.

Rewilding addresses this in several key ways:

  • Biodiversity recovery: Restoring habitats and species interactions brings back insects, birds, and mammals that have been absent for generations
  • Carbon sequestration: Restored forests, peatlands, and wetlands are significant carbon stores, making rewilding a key tool in climate mitigation
  • Flood management: Beavers, for example, build dams that naturally slow water flow and reduce downstream flooding
  • Mental health benefits: Access to wilder, more biodiverse green spaces is consistently associated with improved human wellbeing

The Role of Keystone Species

Some of the most dramatic rewilding outcomes involve keystone species — animals whose presence has an outsized effect on the wider ecosystem. The reintroduction of wolves to Yellowstone National Park in the United States is the most cited example: wolves controlled deer populations, which allowed riverbanks to revegetate, which stabilised rivers, which supported fish, otters, and beavers. This chain of effects — known as a trophic cascade — transformed the landscape.

Inspiring Rewilding Projects Around the World

  • Rewilding Europe: A network of rewilding areas across the continent, from the Danube Delta to the Iberian highlands, reintroducing bison, wild horses, and lynx
  • Trees for Life, Scotland: Restoring the ancient Caledonian Forest in the Scottish Highlands through natural regeneration and deer management
  • Knepp Estate, England: A former intensive farm transformed into one of the most species-rich habitats in southern England through low-intervention rewilding
  • Iberá Wetlands, Argentina: A project restoring giant anteaters, jaguars, and peccaries to a vast wetland ecosystem

Challenges and Controversies

Rewilding is not without debate. Reintroducing large predators raises legitimate concerns for farmers and rural communities. Questions remain about which "baseline" state to restore, given that all landscapes have human histories. Balancing rewilding with the economic needs of local people is a genuine challenge that the conservation community continues to work through.

How You Can Support Rewilding

You don't need to own a farm to contribute. Supporting organisations working on rewilding through membership or donation is the most direct action. You can also rewild your own garden — removing ornamental plants in favour of native species, allowing a lawn corner to grow wild, or installing a pond. These small actions, multiplied across millions of gardens, genuinely matter.