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🦔 Urban Hedgehog Welfare

Hedgehog Ecology in Urban Areas

The West European hedgehog (Erinaceus europaeus) has adapted surprisingly well to urban environments — in some cities, garden hedgehog densities exceed those on farmland. Urban gardens provide abundant food (earthworms, beetles, slugs), nesting sites in compost heaps and log piles, and relative safety from agricultural machinery and badger predation.

However, urban hedgehogs face a distinct set of welfare challenges: garden hazards, road traffic, and the fragmentation of habitat by impermeable fencing. Hedgehogs travel 1–2 km per night — connectivity between gardens is essential.

Key Welfare Hazards

Garden Hazards

• Strimmers and lawnmowers: Hedgehogs curl up rather than flee — strimming long grass without checking first is a major cause of injury. Always check before strimming; check bonfires before lighting
• Ponds and water features: Hedgehogs can swim but drown if unable to exit. Sloped beach area or ramp on every pond is essential
• Netting: Fruit cage and football goal netting left on the ground traps and kills hedgehogs. Lift netting off the ground when not in use
• Slug pellets: Metaldehyde slug pellets are highly toxic to hedgehogs. Use iron phosphate alternatives or non-chemical control
• Drain covers: Uncovered drains trap hedgehogs — ensure all drains have covers

Road Traffic

Road traffic is one of the leading causes of hedgehog mortality. Creating wildlife corridors through gardens allows hedgehogs to move between habitat patches without crossing roads. Hedgehog-friendly garden connectivity (see below) reduces the need for road crossings.

Hibernation Disturbance

Hedgehogs hibernate from approximately November to March/April in leaf pile and compost heap nests. Disturbing hibernating hedgehogs wastes critical fat reserves. Do not move or disturb suspected hibernation sites in winter; be cautious when clearing compost heaps in autumn.

Supporting Hedgehog Welfare

Hedgehog Highways

A 13cm × 13cm hole in garden fencing allows hedgehog passage while excluding most other animals. The Hedgehog Street campaign has created hundreds of thousands of hedgehog holes across the UK. Coordinate with neighbours for maximum benefit — a connected network of gardens dramatically increases hedgehog territory size and food access.

Food and Water

• Provide fresh water daily — particularly important in dry weather
• Supplementary feeding: meaty cat/dog food, specialist hedgehog food
• NEVER give milk or bread — lactose intolerant, bread is nutritionally empty
• Use feeding station to reduce bird competition and allow monitoring

Nesting Sites

• Log piles in quiet corners provide nesting and hibernation sites
• Hedgehog houses (purpose-built or DIY) provide secure, dry nesting
• Leave areas of long grass and leaf litter as wild corners
• Compost heaps are favourite hibernation sites — note and avoid disturbing

When Hedgehogs Need Help

Signs a hedgehog needs assistance:

• Out during daylight — this is almost always a sign of a problem
• Wobbly, lethargic, or moving in circles
• Extremely thin (keel bone visible)
• Covered in flies or with visible wounds
• Very small hoglets (under 300g) found after October — too small to survive hibernation

Contact: British Hedgehog Preservation Society (01584 890801), RSPCA (0300 1234 999), or local hedgehog rescue for advice. Keep in a cardboard box with ventilation holes, a hot water bottle wrapped in a towel in one half, and offer cat food and water while awaiting advice.