Barn Owl Conservation and Welfare

Barn owls are one of the UKs most beloved and widely monitored bird species, facing welfare challenges from road traffic mortality, habitat loss, rodenticide poisoning and harsh winters that require active conservation support.

Key Facts

The UK barn owl population is estimated at approximately 4,000 breeding pairs, with significant annual variation
Road traffic accidents are the leading cause of death in barn owls, with an estimated 3,000 to 5,000 killed annually on UK roads
Second-generation anticoagulant rodenticides are found in the livers of approximately 90% of tested UK barn owls
Barn owls require rough grassland for hunting and appropriate nest sites — both increasingly scarce in intensive agricultural landscapes
The Barn Owl Trust runs an extensive monitoring and conservation programme at www.barnowltrust.org.uk

Welfare Considerations

Barn owl welfare is compromised at multiple points in their lives. Young owls learning to hunt face the highest road traffic mortality, particularly where roads cut through rough grassland hunting territories. Rodenticide accumulation in barn owl livers causes internal haemorrhaging — a painful death from feeding on poisoned rodents. The loss of rough grassland to agricultural intensification reduces prey availability, causing chronic food insecurity that affects breeding success and body condition. Nest site provision through nest boxes has been one of the most successful barn owl conservation interventions, demonstrating how targeted welfare infrastructure can significantly improve outcomes for a species facing habitat and food insecurity.

What You Can Do

Install a barn owl nest box in suitable rural habitat following Barn Owl Trust guidance at www.barnowltrust.org.uk
Advocate for the use of non-anticoagulant rodenticide alternatives on farms and in buildings
Support agri-environment schemes that create rough grassland strips alongside field margins for barn owl hunting
Drive carefully on rural roads at night when barn owls are most active and vulnerable
Contribute barn owl monitoring data to the Barn Owl Trust survey programme