Barn owl nest box schemes have been highly successful at supplementing natural nest site availability, directly improving breeding welfare and population recovery.
Nest box provision for barn owls represents one of the most impactful and evidence-based direct welfare interventions available to landowners and conservation volunteers. The breeding welfare benefit - enabling owlets to develop in a safe, temperature-stable cavity - is direct and well-documented. Good nest box design that prevents overheating, excludes predators, and remains dry in British weather conditions, combined with appropriate siting away from disturbance and near good vole habitat, maximizes the welfare benefit of each box installed. Monitoring nest boxes for occupancy and breeding success, while minimizing disturbance, provides data that guides future conservation planning and validates the welfare investment.