Wildlife

Barn Owl Rodenticide Poisoning

Secondary poisoning from rodenticides kills thousands of barn owls and other raptors annually, as predators accumulate toxins from poisoned rodents they consume.

Key Facts

Studies in the UK and US show over 90% of tested barn owls carry detectable rodenticide residues
Second-generation anticoagulant rodenticides cause internal bleeding over days before death
Barn owls eat up to 4 rodents per night, rapidly accumulating lethal body burdens of rodenticide
A single farm using rodenticides can deplete owl populations across a large surrounding area

Welfare Considerations

Rodenticide poisoning causes a slow, painful death from internal hemorrhaging over multiple days. Barn owls that consume poisoned rodents are unwitting victims of pest control targeted at other species. The ecological irony is profound: owls are highly effective natural rodent controllers, and poisoning them removes the biological control that reduces the need for rodenticides.

What You Can Do

Never use second-generation anticoagulant rodenticides in or around buildings
Install barn owl nest boxes to encourage natural rodent control
Report suspected rodenticide-poisoned raptors to wildlife authorities for testing
Support farming practices and policies that reduce agricultural rodenticide use
Advocate for retail restrictions on the most harmful rodenticide compounds