Wild Hedgehog Decline and Garden Welfare

Hedgehog populations have crashed by over 50% in rural Britain since 2000 — but gardens represent a refuge where individual welfare and population recovery can both be supported.

Key Facts

UK hedgehog populations have declined from an estimated 30 million in the 1950s to under 1 million today — a collapse of over 95%
Intensification of agriculture — loss of hedgerows, use of pesticides, and removal of rough grassland — is the primary driver of decline
Urban and suburban gardens now support higher hedgehog densities than most agricultural landscapes
Hedgehogs roam up to 2 km per night — garden walls and fences create barriers that fragment habitat and prevent access to food and mates
Common garden hazards include garden netting, strimmers, ponds without exit points, slug pellets containing metaldehyde, and bonfires
Hedgehogs are natural pest controllers — a single individual can consume thousands of invertebrates per night
The People's Trust for Endangered Species and Hedgehog Street campaign provide practical guidance for garden hedgehog support

Welfare Considerations

Hedgehog welfare in gardens involves both preventing acute harms and supporting the conditions for natural foraging and hibernation. Hedgehogs injured by strimmers, trapped in netting, drowned in ponds, or poisoned by slug pellets experience acute, preventable suffering. Malnourished hoglets entering hibernation underweight face death from hypothermia — a welfare harm that garden supplementary feeding can prevent. The combination of acute hazard reduction and positive habitat provision makes gardens one of the most impactful spaces where individual people can make a direct difference to wild animal welfare in their immediate environment.

What You Can Do

Cut a 13cm x 13cm hole in the bottom of garden fences to allow hedgehog passage — encourage neighbours to do the same
Check areas of long grass and leaf piles before strimming — hedgehogs shelter in exactly these spots
Add an exit ramp to garden ponds — a simple plank or stone ramp allows hedgehogs that fall in to escape
Stop using metaldehyde slug pellets — use ferric phosphate alternatives or physical barriers instead
Check bonfires before lighting — hedgehogs commonly nest in unlit bonfires
Provide supplementary food (meat-based cat or dog food, not milk or bread) in a hedgehog feeding station from autumn
Join Hedgehog Street and log hedgehog sightings to contribute to population monitoring