Long-Eared Owl Woodland Welfare and Winter Roost Protection

Long-eared owls form communal winter roosts in dense shrubs that require protection from disturbance to maintain the energy budgets of birds migrating through or wintering in the UK.

Key Facts

Long-eared owls breed in northern Britain but winter in larger numbers with continental migrants
Communal roosts of up to 50 birds occur in dense hawthorn, blackthorn, and conifer scrub
Disturbance to winter roosts forces energy-expensive flight at a critical time
UK breeding population of around 2,400 pairs is estimated but poorly monitored
They hunt exclusively at night over open rough grassland and moorland edges

Welfare Considerations

Long-eared owls at winter roosts are in an energy-critical state, having invested significant reserves in nocturnal hunting the previous night. Disturbance that flushes roosting birds in daylight forces unnecessary energy expenditure and exposes them to diurnal raptor predation. Birds that cannot maintain adequate energy budgets through undisturbed roost rest may abandon roost sites or suffer weight loss that compromises survival and subsequent breeding. Protection of known roost sites through wardening and access management is a direct welfare intervention.

What You Can Do

Keep dogs on leads and maintain distance from known long-eared owl roost sites
Support wildlife trust wardening of significant communal roost sites
Report long-eared owl roost locations to county recorders for monitoring
Avoid disturbing dense scrub habitats in winter even when owls are not visible
Contribute to the BTO Winter Atlas to improve monitoring of owl distributions