Wildlife

Wild Dormouse Hibernation and Habitat Loss

The hazel dormouse is a protected species in the UK facing population collapse from habitat loss, with hibernation welfare directly tied to woodland connectivity and shrub layer quality.

Key Facts

UK hazel dormouse populations declined 70% between 2000 and 2020
Dormice spend 7 months of the year hibernating in leaf nests on the ground
Disconnected woodland fragments prevent dormice from accessing sufficient food before hibernation
Dormice below 15g in autumn face high mortality from energy depletion during hibernation
Dormouse boxes provide supplementary nesting sites used for both breeding and hibernation

Welfare Considerations

Dormice that cannot accumulate sufficient fat before hibernation face starvation over winter. Woodland connectivity and shrub layer quality are the key welfare and conservation variables.

What You Can Do

Support ancient woodland protection and hedgerow restoration in dormouse areas
Install dormouse boxes in suitable woodland habitats
Report dormouse sightings to national monitoring schemes
Avoid disturbing leaf litter and bramble areas where dormice may hibernate