Common Toad Welfare: Road Mortality During Spring Migration

Common toads undertaking spring breeding migrations are killed in enormous numbers on roads, with organized toad patrol schemes providing one of the most direct and measurable wildlife welfare interventions available.

Key Facts

Common toads in the UK have declined by 68 percent since the 1980s
Road mortality during spring migrations is one of the leading causes of toad death
Toads migrate annually from terrestrial hibernation sites to ancestral breeding ponds
Toad patrol schemes operated by volunteer groups have carried over 4 million toads safely across roads
The temperature threshold for migration is around 5 degrees C at night with mild, wet conditions

Welfare Considerations

Road crossing causes extreme mortality in migrating toads. Being struck by vehicles causes immediate death or fatal injury to individual animals. Roads between hibernation and breeding sites create a barrier that forces toads to cross dangerous surfaces rather than diverting. Injured toads that are not immediately killed may suffer for prolonged periods from traumatic injuries. The welfare impact of road mortality extends beyond individual animals to population-level effects that reduce the number of animals that survive to breed. Common toad declines driven partly by road mortality reduce population resilience, creating demographic welfare problems for the species as a whole.

What You Can Do

Join or support a local toad patrol group that carries toads safely across roads during spring migration
Set up a new toad patrol in your area if roads cross toad migration routes with no existing group
Contact your local council about installing toad tunnels under roads on major migration routes
Report toad mortality on roads to Froglife and participate in toad monitoring programs
Create or maintain garden ponds to provide alternative breeding habitat close to hibernation sites
Drive carefully on wet mild nights in February-April when toad migrations are most likely