Wildlife

Swift Welfare: Urban Colony Loss and Nest Site Provision

UK swift populations have declined by 60% since 1995, primarily due to loss of nest sites in modernised buildings, with serious welfare implications for colonial nesters.

Key Facts

Swifts return to the exact same nest site every year
Building renovation destroys an estimated 70% of swift nest access points
Swifts cannot take off from the ground; nest site loss is often fatal for chicks
Swift colonies show strong social bonds and mate fidelity across decades

Welfare Considerations

Swift chicks displaced from destroyed nests die of starvation and exposure on the ground. Adults returning to blocked nest sites repeatedly attempt entry, causing stress and exhaustion. The loss of colonial nest sites represents not only individual welfare harm but disruption of social structures maintained over generations. Planning regulations now require swift brick installation in new developments in some UK councils.

What You Can Do

Install swift nesting bricks or boxes on suitable buildings
Ensure building contractors check for swift nests before work begins
Contact your local authority to advocate for swift planning conditions
Support RSPB and Swift Conservation swift surveys and colony protection