From unauthorised species releases to small groups buying up land, ‘guerrilla rewilding’ is going mainstream. But experts worry that these rogue efforts could do more harm than goodVisions of habitats teeming with nature are powerful, particularly so in an age of extinction. Rewilding, which offers the promise of such transformations, was once something most would have imagined happening far away, carried out by people unlike them, but times are changing. The wilderness is getting closer to home and more personal.In the past few months, there have been two suspected lynx releases and one of feral pigs in a small area of the Cairngorms, along with reports of a rise in “beaver bombing” on England’s rivers, and wild boar roaming Dartmoor.