Wild Noctule Bat Welfare and Roost Protection

Noctule bats are the largest UK bat species and face welfare threats from roost loss, pesticide exposure and wind turbine collision.

Key Facts

Noctule bats roost in tree holes and occasionally buildings, using summer roosts and winter hibernation sites
All UK bat species and their roosts are protected under the Conservation of Habitats and Species Regulations
Felling trees containing bat roosts without a licence is a criminal offence
Noctules fly high and fast, making them more vulnerable to wind turbine collision than low-flying species
Insecticide use reduces moth and beetle availability, their primary prey
Noctules can travel up to 10 km from roosts to foraging areas
They emerge early at dusk and are highly visible bat detectors at lakesides and open countryside
Winter hibernation in hollow trees makes them vulnerable to tree felling operations

Welfare Considerations

Noctule bats face welfare threats from roost destruction during tree felling, pesticide-induced prey reduction, and wind turbine collision. Bats injured by turbines suffer wing membrane damage that prevents flight and foraging, typically leading to starvation. Tree felling destroying roosts during maternity season causes pup mortality and adult distress. Pesticide reduction in the wider environment is essential for maintaining insect prey abundance. All construction and tree works near bat roosts require ecological assessment to prevent offences and welfare harm.

What You Can Do

Never fell trees or renovate buildings that may contain bats without an ecological survey
Reduce pesticide use in gardens to improve bat prey availability
Install bat boxes in gardens and woodland to supplement natural roost sites
Report injured bats to the Bat Conservation Trust helpline on 0345 1300 228
Support the Bat Conservation Trust's research and advocacy on turbine mortality