Europe's largest land mammal is making a comeback in Bulgaria's Rhodope Mountains, where a rewilding project has been releasing European bison back into the wild. We look at how the return is unfolding.
High in the forests of southern Bulgaria, one of Europe's most impressive animals is slowly finding its way home. The European bison, once lost from these hills, is being brought back through a long term rewilding effort that is gradually rebuilding a wild population in the Rhodope Mountains.
In this article we look at the story behind this comeback, from the near disappearance of the species to the careful work of reintroducing it. We also consider why an animal like the bison matters so much for the health of the wider landscape it lives in.
Europe's largest land mammal
The European bison is the largest land mammal on the continent, a powerful grazing animal that once ranged widely across Europe's forests and plains. Its sheer size and presence make it a striking symbol of wild nature, and its return is closely watched by those who care about the region's biodiversity.
Lost from the wild
According to conservation groups, the European bison disappeared from the wild in Bulgaria as far back as the Middle Ages. Across Europe as a whole, hunting and the loss of habitat drove the species to extinction as a free roaming animal by the early part of the twentieth century, leaving only animals in captivity.
A rewilding effort in the Rhodopes

The effort to change that in Bulgaria is centred on the Rhodope Mountains, a rugged and richly forested region in the south of the country. Here a rewilding project has been working to bring the bison back, releasing animals into carefully chosen areas where they can begin to live wild once again.
The first arrivals
According to reports, the first step came in October 2013, when a small number of bison were brought to a reserve in the area known as Studen Kladenets. These early arrivals marked the beginning of a slow and patient process aimed at establishing a lasting presence for the species in the region.
Roaming free
According to reports, in the summer of 2019 a herd of seven animals, made up of two males and five females, was released from its enclosure and began living freely in the Studen Kladenets area. That moment was an important milestone, as the bison moved from being managed to roaming the landscape on their own.
A long journey from Slovakia
The work has continued in the years since. According to reports, a group of five European bison were more recently released at a rewilding site in the Rhodope Mountains, having travelled more than 1000 kilometres from a breeding centre in Slovakia to reach their new home in Bulgaria.
Why bison matter
Bison are often described as ecosystem engineers. As they graze, wallow and move through the land, they help to shape the vegetation, create space for other species and keep habitats varied. In this way, returning bison can benefit a whole range of plants and animals, not just the bison themselves.
Building a population
Rebuilding a wild population is a gradual process that depends on more than just releasing animals. According to conservation groups, the support of local communities has been an important part of the effort, helping the free roaming population to grow steadily over the years since the first arrivals.
A wider European comeback
The work in Bulgaria is part of a broader story unfolding across the continent. In several countries, conservationists have been reintroducing European bison to areas where they once lived, slowly reversing the decline that had pushed the species out of the wild in the first place.
The challenges of rewilding
Bringing back a large wild animal is not without its difficulties. It requires suitable habitat, careful monitoring and a good relationship with the people who share the landscape, so that the bison and local communities can coexist without conflict as the population settles in over time.
Hope for the future
For those involved, each new release and each calf born in the wild is a sign of progress. The sight of bison moving freely through the Rhodope forests offers a hopeful picture of what careful, patient conservation work can achieve when it is given the time to succeed.
What comes next
The coming years will show how well the bison establish themselves in their new surroundings. If the population continues to grow and spread, the return of this iconic animal could become one of the more encouraging conservation stories to emerge from this corner of Europe.
Really useful piece on Rhodope Mountains.
Could not agree more.
Same here.

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