UK Hedgehog Decline: Causes and Conservation Welfare

UK hedgehog populations have declined by over 50% since 2000, with road mortality, garden hazards and habitat fragmentation among the primary causes of individual and population welfare impacts.

Key Facts

UK hedgehog populations have declined from approximately 30 million in the 1950s to under 1 million today
Garden fencing (without hedgehog holes) creates population fragmentation, limiting foraging range and mate finding
Slug pellets containing metaldehyde (now banned in UK) and methiocarb caused significant hedgehog poisoning
Bonfire piles left overnight are frequent death traps - hedgehogs shelter in them and die when fires are lit
The British Hedgehog Preservation Society and People's Trust for Endangered Species coordinate hedgehog monitoring and conservation

Welfare Considerations

Hedgehog welfare is shaped by a landscape increasingly hostile to their needs - fragmented by fences, depleted of invertebrate food by pesticides, dangerous with roads and bonfires. Individual hedgehogs facing these hazards experience starvation, injury, poisoning and death that is directly caused by human choices that could be different. Garden management choices - hedgehog holes in fences, reducing pesticide use, checking bonfires before lighting - are small individual actions that collectively create the connected habitat hedgehogs need. Hedgehog welfare is also conservation welfare - a declining population means fewer individuals living good lives, compounding individual welfare costs with population-level vulnerability.

What You Can Do

Install at least one 13x13 cm hedgehog hole in garden fencing to allow movement between gardens
Check bonfires immediately before lighting and move material to a new pile on the day
Stop using slug pellets - use nematode biological control or physical barriers instead
Record hedgehog sightings using the Big Hedgehog Map to support population monitoring