Hazel dormice are among Britain most threatened mammals, declining dramatically due to habitat loss and fragmentation. Their specialised needs and vulnerability make them important indicators of woodland health.
Dormouse welfare challenges are concentrated in the hibernation period and in habitat fragmentation between populations. Animals awakening from hibernation during mild spells deplete fat reserves without adequate food availability. Isolated populations experience inbreeding and reduced immune function. Fragmented woodlands force dormice into unsuitable habitat to find mates or new territories, increasing predation risk. Conservation management that reconnects woodland fragments and restores coppice rotations directly improves individual welfare alongside population viability.