Wild Kestrel Welfare: Farmland Hunting and Population Decline

The kestrel was once the most familiar British raptor. Its population decline reflects the collapse of its small mammal prey base in farmland landscapes.

Key Facts

UK kestrel populations have declined by 38% since the 1970s, with steeper declines on farmland
Kestrels hover into the wind to locate small mammals using UV fluorescence from vole urine trails
Field vole populations, the primary prey, have declined with loss of rough grassland on farmland
Kestrels nest in tree holes, old crow nests, and cliff ledges - nest box schemes can supplement natural sites
Young kestrels in their first autumn have the highest mortality as inexperienced hunters struggle to find sufficient prey
Road verge mowing that removes rough grass eliminates key hunting habitat along road corridors
Kestrels can detect the UV reflectance of vole urine trails, allowing them to focus hunting effort efficiently

Welfare Considerations

Kestrel welfare is primarily determined by rough grassland availability for hunting and prey field vole abundance. Individual kestrels in farmland landscapes with insufficient rough grass face extended hunting failures, weight loss, and ultimately starvation. First-year birds with less hunting experience are most vulnerable. The collapse of rough grassland on intensive farms has removed hunting habitat across millions of hectares, concentrating kestrels on road verges and margins where mowing management further reduces their quality. Retaining and restoring rough grassland is the foundational kestrel welfare intervention.

What You Can Do

Advocate for uncut road verge management that retains rough grass for kestrel hunting habitat
Encourage farmland rough grass retention through agri-environment scheme applications in your area
Install kestrel nest boxes on poles or buildings in open farmland and record occupancy
Record kestrel sightings through the BTO Breeding Bird Survey and BirdTrack for population monitoring