Wild Nightjar Welfare: Heathland Breeding and Disturbance

The European nightjar is a summer visitor to British heathlands and young forestry. Its ground-nesting habits make it highly vulnerable to disturbance during the breeding season.

Key Facts

UK nightjar populations have recovered to around 6,400 churring males after severe 20th century declines
Nightjars nest directly on the ground, relying entirely on camouflage for nest protection
Breeding begins in late May; two broods are often attempted with eggs and small chicks present until August
Dogs off leads are the leading cause of nest failure through disturbance and direct predation
Nightjars feed entirely on moths and beetles caught in aerial pursuit; light pollution disrupts this feeding
Males produce the distinctive churring song for hours at dusk and dawn during breeding season
Heathland management including scrub control and bracken cutting is critical to maintaining suitable habitat

Welfare Considerations

Nightjar welfare depends almost entirely on undisturbed ground nesting. A flushed nightjar abandons its nest temporarily, exposing eggs or chicks to temperature extremes and predators. Repeated disturbance by walkers and dogs causes nest abandonment and total breeding failure. The birds' complete reliance on camouflage rather than flight makes them particularly vulnerable - they sit tight until the last moment, meaning dogs can easily locate and disturb nests before the bird flushes.

What You Can Do

Keep dogs on leads on heathland from May to August when nightjars are breeding
Visit heathland sites at dusk to hear churring males without approaching nesting areas
Support heathland conservation organisations including the RSPB and local wildlife trusts
Contribute nightjar survey data to the BTO and RSPB nightjar monitoring programmes