Wildlife

Wild Swift Nesting Sites and Welfare

Common swifts are losing nesting sites through building renovation, and provision of nest boxes and integrated nest bricks is a direct welfare intervention.

Key Facts

Swifts return to the same nest sites for decades
Building renovation destroys access to roof spaces used by breeding swifts
They cannot nest on external surfaces - only access internal spaces
Swift bricks integrated into new buildings provide permanent nesting opportunities
UK swift populations declined by 53% between 1995 and 2020

Welfare Considerations

Swifts returning to find their nest site blocked arrive after a 5,000 km migration only to face breeding failure. The welfare harm is both the failed reproductive investment and the loss of established nesting sites to which swifts have strong fidelity. Building regulations requiring swift nest provisions in new builds and renovations would systematically address this.

What You Can Do

Install swift nest boxes or bricks at the correct height on your building
Advocate for planning policies requiring swift nest provisions in renovation
Support swift monitoring groups in your area