Barn Owl Conservation and Rodenticide Welfare Crisis

Barn owls are beloved and effective natural pest controllers whose populations are severely impacted by anticoagulant rodenticides. The welfare and conservation crisis demands urgent action.

Key Facts

UK barn owl populations have declined by 70% since the 1970s — second generation anticoagulants are a major factor
Studies find second generation anticoagulant residues in over 90% of barn owls tested in the UK
A barn owl experiencing internal haemorrhage from rodenticide poisoning suffers over days before death
Barn owls control rodent populations naturally — a pair with chicks can consume 1,000+ rodents per year
Farmers who support barn owls through nest box provision and rodenticide reduction benefit from natural pest control
The Campaign for Responsible Rodenticide Use promotes professional-only access and stewardship protocols for second generation anticoagulants

Welfare Considerations

Barn owl poisoning is a welfare crisis that also represents a profound conservation irony: the species most effective at controlling the rodents that rodenticides target is being killed by those same rodenticides. Individual barn owls poisoned by anticoagulants experience slow, painful deaths from internal bleeding. The practical solution is integrating natural predator support with rodenticide reduction — installing barn owl nest boxes, maintaining rough grassland for hunting, and switching from second generation anticoagulants to first generation or non-chemical rodent control wherever possible. Farmers who adopt integrated approaches typically maintain or improve rodent control while recovering owl populations.

What You Can Do

Install barn owl nest boxes on rural properties and land you manage or can access
Avoid all second generation anticoagulant rodenticides (brodifacoum, difenacoum, bromadiolone)
Support the Campaign for Responsible Rodenticide Use advocacy and stewardship standards
Report found barn owl corpses to the Barn Owl Trust for post-mortem and rodenticide monitoring
Create rough grassland margins on arable land to provide barn owl hunting habitat