Black Grouse Welfare: Lek Disturbance and Upland Habitat in the UK

Black grouse lekking grounds are critical for breeding, and human disturbance during the early morning display season causes significant welfare harm and breeding failure.

Key Facts

UK black grouse population is estimated at around 5,000 males and has partially recovered after severe declines
Males display at traditional lek sites before dawn from March through May to establish breeding hierarchies
Disturbance at lek sites during display disrupts breeding behaviour and causes males to abandon leks
Habitat management combining heather moorland with woodland and grassland mosaic is key to black grouse welfare

Welfare Considerations

Black grouse lekking behaviour is the central reproductive event for male birds. Lek sites are traditional, often used for decades, and disturbance during dawn display in March-May causes severe disruption. Disturbed males cease displaying, breaking down the hierarchy establishment process and potentially causing abandonment of the lek site entirely. For females, lek disturbance reduces access to mate assessment that is essential for optimal mate choice. The cumulative effect of repeated disturbance across the display season significantly reduces breeding success and welfare for a species already at low population density.

What You Can Do

Stay away from known lek sites before dawn during March through May
Follow black grouse access guidance from national parks and wildlife organisations
Support moorland management creating the habitat mosaic black grouse need for breeding and winter survival
Contribute to black grouse monitoring through BTO and GWCT surveys that track lek activity