Wildlife

Swift and Swallow Urban Nesting Site Protection

Swifts and swallows depend on artificial nesting sites in buildings that are lost through renovation. Protecting and providing nesting sites is a high-impact welfare action for these declining species.

Key Facts

UK swift populations have declined by approximately 60% since 1995 primarily due to nesting site loss
Swifts are entirely aerial except when nesting and cannot take off from flat ground if grounded
Building renovation and repair destroys thousands of swift nesting cavities each year
Swift nest boxes provide effective replacement sites and new colonies establish rapidly
Swallows and house martins similarly rely on undisturbed nest sites in buildings and under eaves

Welfare Considerations

Swift population declines represent aggregate welfare loss at the scale of millions of individuals. Each nesting site lost potentially ends multiple breeding attempts over many years as swifts show strong site fidelity. Nest protection during renovation and provision of nest boxes are high-impact welfare interventions. Planning regulations in some countries now require swift brick integration in new builds.

What You Can Do

Install swift nest boxes or bricks on buildings, ideally at height on north or east-facing walls
Check for active swift or swallow nests before starting building renovation work
Delay renovation of active nest sites until after the breeding season ends
Play swift call recordings near nest box installations to attract new colonies
Report swift breeding sites to local recording groups to protect them in future