Wild Barn Owl Box Schemes: Supporting Barn Owl Recovery

Nest box provision is a key intervention for barn owl conservation, directly improving breeding success and population recovery across the UK and Europe.

Key Facts

Barn owl (Tyto alba) populations in the UK declined by over 70% during the 20th century due to habitat loss and rodenticide poisoning.
The Barn Owl Trust estimates 4,000-6,000 breeding pairs currently exist in Britain.
Nest box schemes have directly contributed to population recovery — boxes provide safe nesting sites where natural cavities are scarce.
Barn owls are highly vulnerable to second-generation anticoagulant rodenticide (SGAR) poisoning through prey consumption.
Cold wet winters are major mortality drivers; barn owls cannot hunt in prolonged rain and can starve within 48-72 hours.

Welfare Considerations

Barn owls face multiple welfare threats including starvation during harsh winters, rodenticide poisoning, and road traffic collisions (road deaths account for up to 50% of annual mortality). Nest box provision addresses habitat limitation but does not mitigate these other threats. Boxes must be correctly sited away from roads and farm chemical storage to avoid SGAR exposure through rat prey. Welfare monitoring of nest box occupants uses non-invasive camera systems and ring data rather than regular physical checks which disturb breeding pairs. Chick welfare during ringi ng is assessed by trained BTO ringers who minimise handling time and check for injuries.

What You Can Do

Erect a barn owl nest box on your land following Barn Owl Trust guidelines on siting and design.
Switch to non-anticoagulant rodent control methods such as snap traps and professional control.
Join the Barn Owl Trust or BTO's Barn Owl Monitoring Programme.
Create rough grassland margins on farmland to provide hunting habitat for foraging owls.
Report road-killed barn owls to the Barn Owl Trust to contribute to mortality monitoring data.