The western European hedgehog (Erinaceus europaeus) has declined by more than 50% in the UK since the turn of the millennium, with steeper declines in rural areas. Urban and suburban gardens have become increasingly important refuges, and individual human actions significantly affect hedgehog welfare in these environments.
Gardens contain numerous welfare hazards for hedgehogs:
Supplementary feeding can benefit individual hedgehogs, particularly nursing females and juveniles in autumn building fat reserves for hibernation. Recommended foods include wet cat or dog food (chicken or turkey, not fish), or specific hedgehog food. Milk and bread — historically recommended — cause digestive upset and should be avoided. Fresh water provision alongside food is important.
Hedgehogs hibernate from approximately November to March in the UK. Welfare concerns during hibernation include inadequate fat reserves (juveniles born late need intervention), disturbed hibernation sites, and premature emergence during mild winter spells. Providing winter shelter (hedgehog houses, log piles) and leaving areas of garden undisturbed through winter supports hibernation welfare.
Injured or sick hedgehogs require specialist rehabilitation. Signs requiring intervention include: active during daylight hours, staggering, obviously injured, or juveniles under 300g in autumn (insufficient fat for hibernation). The British Hedgehog Preservation Society maintains a finder network connecting hedgehogs with rescue centres. Hedgehog rehabilitation requires specialist expertise — well-meaning interventions by untrained individuals can cause additional harm.
Individual garden actions aggregate to population-level welfare outcomes. Neighbourhood-scale habitat connectivity — achieved through hedgehog holes in every garden fence — has a measurably greater population welfare effect than feeding programs in isolated gardens. Thinking of hedgehog welfare at the landscape scale, not just in one garden, maximizes welfare impact.