Wild Hedgehog Decline and Welfare

Britain's hedgehog population has declined by over 50% since 2000; understanding the causes is essential for effective conservation and welfare interventions.

Key Facts

Hedgehog numbers in Britain fell from approximately 30 million in the 1950s to under 1 million today.
Agricultural intensification, loss of hedgerows, and road mortality are major drivers of decline.
Hedgehogs travel 1-2 km per night to forage; fragmented gardens and roads interrupt their ranging behaviour.
Metaldehyde and other molluscicides can kill hedgehogs that eat poisoned slugs.
Hedgehogs are important indicators of wider invertebrate-rich habitat quality.

Welfare Considerations

Individual hedgehogs face numerous welfare threats: road strikes, entanglement in garden netting and litter, starvation due to habitat fragmentation, and secondary poisoning. Rehabilitation centres treat thousands of injured hedgehogs annually but long-term population recovery requires landscape-scale habitat improvement. Garden wildlife corridors — small holes in fences — significantly improve ranging opportunities. The welfare of individual hedgehogs and population-level conservation are deeply intertwined: a species in sharp decline means each surviving individual faces greater challenges.

What You Can Do

Create a 13x13 cm "hedgehog highway" hole in garden fencing to connect habitats.
Avoid using slug pellets containing metaldehyde or ferric phosphate near hedgehog habitats.
Leave areas of your garden wild with leaf piles and log stacks for hedgehog shelter.
Support hedgehog rescue centres and the British Hedgehog Preservation Society.