The European hedgehog (Erinaceus europaeus) is one of Britain's most beloved native mammals and increasingly a conservation priority. Population declines of approximately 30% in rural areas and 25% in urban areas since 2000 signal a species in trouble, requiring both population-level conservation and individual welfare attention.
Hedgehogs are insectivores (feeding primarily on beetles, earthworms, caterpillars, and other invertebrates) that inhabit woodland edges, hedgerows, gardens, and scrubby grassland. They are solitary, nocturnal, and hibernate from approximately November to March (timing varies with temperature). Hedgehogs require large home ranges (up to 1km² for males) comprising multiple habitat types and shelter sites. They can swim but are often drowned in garden ponds without exit points.
Hedgehog decline is driven by multiple interacting factors: habitat loss (loss of hedgerows, rough grassland, and woodland edges), agricultural intensification (reducing invertebrate prey availability), road mortality (a major cause of hedgehog death—up to 100,000 killed annually on UK roads), garden hazards (strimmers, bonfires, netting), predation by badgers and foxes, and climate change effects on hibernation timing and invertebrate availability.
Hedgehogs are commonly admitted to wildlife rehabilitation centres with: injuries from strimmers (deep lacerations), burns from bonfire lighting, predator attacks, road traffic accidents, lungworm infestation (Crenosoma striatum—highly prevalent, causing coughing and respiratory distress), flystrike (maggot infestation in wound sites), and autumn juveniles too small to hibernate successfully. Individual welfare management for these animals requires appropriate veterinary care, husbandry, and rehabilitation protocols.
Lungworm infection is prevalent in UK hedgehog populations and causes significant welfare impact through respiratory damage, reduced fitness, and increased vulnerability to other stressors. Treatment with fenbendazole is effective. Tick infestation (particularly Ixodes hexagonus) is ubiquitous and can cause significant blood loss at high infestation levels. Monitoring and treatment for internal and external parasites is important in rehabilitation settings and may be relevant for garden hedgehog populations.
Hedgehog conservation actions with individual and population welfare benefits include: providing hedgehog-friendly garden features (hedgehog houses, log piles, access holes in fences—13cm × 13cm 'hedgehog highways'), ensuring ponds have accessible exit ramps, checking grass and vegetation before strimming, using bonfires only on the day of lighting (or checking for hedgehogs before lighting), and avoiding rodenticide use (which can kill hedgehogs consuming poisoned prey).
The People's Trust for Endangered Species and British Hedgehog Preservation Society coordinate hedgehog monitoring and conservation. Citizen science programmes (hedgehog footprint tunnels, camera trap surveys, BIG Hedgehog Map records) provide distribution data and engage the public. Community hedgehog street projects—establishing networks of hedgehog-friendly gardens across neighbourhoods—demonstrate how citizen action can create landscape-scale conservation outcomes.