Conservation group Pro Natura says that if the species – which belongs to the marten family – is to survive in the country, a nationwide ecological infrastructure is needed.

The polecat, classified as “vulnerable” on Switzerland’s red list of threatened species, is a nomad with no fixed territory, roaming the countryside at night in search of prey. To do this, it needs hedges, ditches and wetlands. Like many wild animals, it avoids open spaces.

Its network of natural routes has been however largely destroyed, laments Pro Natura on Wednesday. According to the conservation group, structurally rich agricultural landscapes and wetlands are among the currently most threatened types of natural environment in Switzerland.