Hazel dormice return to Isle of Wight

One of Britain’s most threatened woodland mammals has been rediscovered at Swanpond Copse nature reserve, marking the first confirmed sighting on the site since 2018.

The Hampshire & Isle of Wight Wildlife Trust announced the return of the hazel dormouse following a recent survey, during which ecologists found a fresh nest and three dormice. The discovery is being hailed as a major milestone for conservation on the Island.

Dormice have declined by more than 70 per cent in the UK since 1990, mainly due to habitat loss, woodland fragmentation and climate change. The species is protected under European law and is regarded as an important indicator of healthy woodland ecosystems.

Carmen Perry, principal ecologist at the Trust, said: “I couldn’t believe it when I opened one of the boxes and saw a fresh nest. I then felt around and found two dormice snuggled up inside. It was such a relief and a moment of real joy.”

Swanpond Copse is a closed nature reserve, managed to support wildlife recovery. Over recent years, the Trust has carried out habitat work including coppicing and selective thinning to boost light and understorey growth — ideal for dormice. The reserve has a network of 25 nest boxes, which are regularly checked under licence by trained staff. Nests made from honeysuckle bark and hazel leaves are a clear sign of dormouse activity.

Jamie Marsh, the Trust’s director of nature recovery, said: “Their return is proof that targeted conservation works. Dormice are part of what makes our woodlands magical, and their presence means the habitat is thriving.”