Wildlife

Nightjar Heathland Welfare and Human Disturbance

Nightjars are nocturnal migrants that breed on open heathland and recently clear-felled forest. They are vulnerable to disturbance from dog walkers, cyclists, and off-road vehicles during their breeding season.

Key Facts

Nightjars are perfectly camouflaged against leaf litter and rarely seen in daylight
They lay eggs directly on the ground without building a nest
Males produce a distinctive churring song audible for over 500 metres on calm evenings
UK populations have increased since the 1990s but remain concentrated on heathland reserves

Welfare Considerations

Ground-nesting birds like nightjars that incubate without a nest structure are highly vulnerable to nest destruction by trampling and off-lead dog disturbance. Flushed birds expose eggs and chicks to temperature extremes and predation. Night-time disturbance interrupts feeding, which must occur in the brief crepuscular and nocturnal window. Habitat loss concentrates breeding birds onto smaller heathland patches where disturbance pressure per unit area is higher.

What You Can Do

Stick to marked paths on heathland reserves during the breeding season (May-August)
Keep dogs on leads on heathland at night
Visit official nightjar listening events organised by wildlife trusts rather than independent searches
Report any disturbance of nightjar nests to reserve wardens immediately