Kestrel Welfare and Farmland Prey Availability

Kestrels have declined substantially across UK farmland as vole populations have fallen with grassland intensification, reducing the prey base that supports breeding pairs.

Key Facts

UK kestrel populations have declined by approximately 36% since the 1970s, with the steepest falls on lowland farmland
Common voles and field voles are the primary prey — kestrel breeding success closely tracks vole population cycles
Kestrels hunt by hovering over short, rough grassland — loss of field margins, road verges and unimproved grassland eliminates foraging habitat
Nest box provision is highly effective — kestrel boxes on poles and barn walls are readily adopted where food is adequate

Welfare Considerations

Kestrel welfare is primarily a prey availability story — on farmland where intensive management has eliminated rough grassland and vole populations, even optimal nest provision cannot support breeding pairs without adequate food. Welfare impacts of chronic food shortage include reduced breeding attempt frequency, smaller clutch sizes, chick starvation and adult body condition decline. The cumulative welfare cost of food-poor farmland territories operates year-round, not just during the breeding season. Agri-environment scheme management that creates rough grassland habitats with high vole density is the primary kestrel welfare intervention.

What You Can Do

Maintain or restore rough grass field margins, hedgerow bases and road verge buffers as kestrel foraging habitat
Install kestrel nest boxes in appropriate locations — tall poles or barn walls within 1-2 km of rough grassland
Support agri-environment agreements that include rough grassland creation and management in kestrel habitat areas
Report nest box occupancy and breeding attempts to BTO Nest Record Scheme to support population monitoring