Dormouse Conservation and Habitat

Hazel dormice are declining significantly due to loss of woodland habitat. Conservation efforts protect one of the UK most charming woodland mammals.

Key Facts

Hazel dormouse populations have declined by approximately 70% since the 1990s in the UK
They are highly dependent on connected woodland with diverse scrub understorey
Dormice hibernate from October to April and require dry, secure hibernation sites
They are nocturnal and rarely seen, making population monitoring challenging
The National Dormouse Monitoring Programme coordinates over 1,000 nest box surveys annually
Dormouse translocation programmes to suitable woodland have shown reasonable success rates
Hedgerow removal and woodland fragmentation are the primary habitat loss drivers

Welfare Considerations

Dormouse welfare depends on habitat quality and connectivity. In suitable woodland habitats they can thrive, but fragmentation means populations cannot access the food diversity and winter shelter sites they need. Conservation interventions including woodland connectivity, appropriate management and nest box provision directly improve welfare by ensuring animals can access all their needs. Supporting woodland conservation is a practical welfare action for this species.

What You Can Do

Support Peoples Trust for Endangered Species dormouse conservation programme
Participate in dormouse monitoring volunteer surveys if living near suitable habitat
Advocate for woodland connectivity and appropriate coppice management in your area
Support local wildlife trust woodland management projects that benefit dormice