Understanding the multiple interacting causes of hedgehog decline enables targeted responses, from policy changes to individual garden modifications that collectively reverse the trend.
Hedgehogs in fragmented landscapes travel further for food and mates, increasing road mortality exposure. Loss of rough grassland and meadow reduces invertebrate prey availability, causing nutritional stress. Slug pellets and pesticides reduce prey and may poison hedgehogs directly. The cumulative effect of multiple pressures across a landscape creates a hostile environment that hedgehogs cannot sustain population growth within.