Wildlife

UK Hazel Dormouse Hibernation and Winter Welfare

Winter welfare of hazel dormice during hibernation and the importance of appropriate habitat conditions.

Key Facts

Hazel dormice hibernate from October to April in nests at ground level
Hibernation success depends on fat reserves built up during autumn
Mild winters can cause dormice to wake prematurely, depleting fat reserves
Ground temperature stability in leaf litter and grass tussocks is essential for hibernation
Climate change is altering dormice hibernation timing and winter survival

Welfare Considerations

Dormice are highly vulnerable to premature waking during mild winters, depleting fat reserves and potentially causing starvation, with habitat management influencing hibernation welfare.

What You Can Do

Support dormouse conservation through the People's Trust for Endangered Species
Leave deep leaf litter and grass tussocks undisturbed during winter
Record dormouse sightings in autumn to assist population monitoring