Short-Eared Owl Welfare: Moorland Management and Vole Population Cycles

The short-eared owl (Asio flammeus) is one of the UK's few diurnal owls, hunting over open moorland, rough grassland, and coastal marshes. Its population fluctuates dramatically with vole population cycles, and moorland management practices directly affect its breeding success and welfare.

Key Facts

UK short-eared owl numbers fluctuate between 1,000 and 5,000 pairs depending on vole population cycles
They breed on the ground in heather and rough grass — making nests vulnerable to burning and predation
Vole population crashes in 3-4 year cycles cause widespread breeding failure and increased adult mortality
Driven grouse moor management including heather burning reduces rough grass habitats preferred for hunting
Persecution through illegal poisoning on grouse moors has been documented affecting short-eared owl populations

Welfare Considerations

Short-eared owls during vole population crashes experience food stress: adults hunt for extended periods and may abandon territories when prey is insufficient for survival. Ground-nesting birds experience predation stress from foxes and corvids, and nest sites disturbed during grouse moor management are abandoned, failing the breeding attempt. Illegal poisoning on managed grouse moors causes secondary poisoning from ingested rodenticide-affected voles. Burning of moorland eliminates nesting cover temporarily, forcing pairs to seek alternative sites. The welfare of short-eared owls depends on maintaining diverse rough grassland and moorland habitats where vole populations can establish.

What You Can Do

Support RSPB's open country monitoring and short-eared owl survey programs
Advocate for reform of driven grouse moor management practices that reduce rough grass habitat
Report any suspected illegal persecution of short-eared owls to Police Scotland or relevant constabularies
Support Natural England's licensing system for heather burning with wildlife protection requirements
Donate to Moorland Association engagement programs promoting wildlife-inclusive moor management