European Hedgehog Welfare: Garden Hazards, Hibernation Risks, and Population Decline

European hedgehogs are facing rapid population decline across the UK and Europe. Individual welfare harms from garden strimmers, bonfires, slug pellets, and road traffic are accumulating across a declining population.

Key Facts

UK hedgehog populations have declined from approximately 36 million in the 1950s to fewer than 1 million today
Road mortality kills an estimated 100,000–200,000 hedgehogs annually in the UK
Garden slug pellets containing metaldehyde and methiocarb poison hedgehogs that eat poisoned slugs
Garden bonfires and compost heaps are attractive hibernation sites — thousands are killed by fires lit without checking
Strimmers and lawnmowers cause severe injuries to hedgehogs resting in long grass
Hedgehog highways — 13 cm gaps in fences between gardens — significantly support population movement and connectivity

Welfare Considerations

Hedgehog welfare is shaped by a collection of human-managed hazards that individually might seem minor but collectively are driving a population crisis. Road mortality causes traumatic injuries — hedgehogs curl defensively when threatened by vehicles, making them maximally vulnerable. Strimmer injuries cause severe lacerations, limb loss, and spinal damage — checking for hedgehogs before strimming saves individual lives. Bonfire checks before ignition should be standard practice from October to March when hedgehogs may be hibernating. Slug pellet poisoning causes prolonged suffering through gastrointestinal irritation and neurological effects before death — ferric phosphate pellets are hedgehog-safe alternatives. Poor hibernation weather — mild wet winters that prevent adequate fat accumulation — causes increasing numbers of underweight hedgehogs emerging too early. Garden hedgehog hospitals and wildlife rehabilitators provide critical welfare support for injured and underweight individuals. Population-level welfare improvement requires addressing habitat and food availability changes driving the decline.

What You Can Do

Create hedgehog highways by making 13 cm gaps in garden fences to allow free movement between gardens
Check for hedgehogs before lighting bonfires or using strimmers — look before you burn or cut
Switch to ferric phosphate slug pellets — they are hedgehog-safe and equally effective against slugs
Donate to British Hedgehog Preservation Society and local wildlife hospitals that rehabilitate injured hedgehogs