Road mortality during migration is one of the most significant welfare impacts on amphibian populations in the UK and Europe.
Amphibian road mortality creates both conservation harm at the population level and welfare harm to individual animals. Injured amphibians may take extended periods to die after being hit by vehicles. The scale of seasonal mortality at road crossing hotspots represents a predictable, preventable welfare emergency that recurs annually. Investment in permanent crossing infrastructure protects welfare more reliably than voluntary patrol programmes.