Dormouse Welfare: Hibernation, Habitat, and Conservation
The hazel dormouse (Muscardinus avellanarius) faces acute welfare threats from habitat fragmentation and climate disruption to its essential hibernation cycle.
Key Facts
- Dormice hibernate for up to 7 months, making up most of their year
- They are highly sensitive to habitat quality, requiring connected woodland with shrub layer
- UK populations have declined by over 50% in the past 25 years
- Climate warming causes dormice to wake early from hibernation into food-scarce conditions
- Dormice are protected under UK law but need active habitat management
Welfare Considerations
Dormouse welfare is intricately linked to their unique life history—spending most of their lives in hibernation requires perfect conditions for fat deposition before and safe, cold sites during hibernation. Climate disruption poses a dual welfare threat: warm autumn temperatures delay the onset of torpor, burning vital fat reserves, while warm winter spells cause premature arousal from hibernation before food is available. Habitat fragmentation prevents dormice from finding optimal sites for foraging, nesting, and hibernation.
What You Can Do
- Support dormouse conservation organizations financially and through volunteering
- Create and maintain appropriate dormouse habitat in gardens and estates
- Install dormouse nest boxes and monitor them under license
- Advocate for connected woodland corridors in planning applications
- Report dormouse sightings to the National Dormouse Monitoring Programme