Wildlife Welfare

Wild Otter UK River Welfare and Road Mortality

Eurasian otters have made a remarkable recovery in UK rivers following water quality improvements, but road mortality remains the leading documented cause of death in the species.

Key Facts

Otter numbers in England increased from near-extinction in the 1970s to widespread presence now
Road mortality accounts for over 50% of documented otter deaths in surveys
Otters cross roads where culverts and bridges force them out of the water
Otter ledges installed under bridges and in culverts reduce road mortality significantly
Young dispersing otters are most vulnerable to road traffic deaths

Welfare Considerations

Road traffic deaths cause acute trauma and suffering in otters. Beyond individual welfare, road mortality removes breeding adults from recovering populations at critical phases. Engineering solutions including otter ledges, dry passes through culverts, and improved bridge designs are highly cost-effective at reducing mortality.

What You Can Do

Support otter conservation groups working on road mortality reduction
Report otter sightings and road casualties to the Environment Agency
Advocate for mandatory otter ledges in new bridge and culvert construction