Swift Welfare and Urban Nesting Loss

Common swifts are losing nesting sites rapidly through building renovation, with nest site provision representing the most direct welfare intervention available.

Key Facts

UK common swift populations have declined by 60% since the 1990s
Swifts are entirely aerial outside of nesting, feeding, drinking, and mating on the wing
They are highly site-faithful, returning to the same nest hole for life
Building renovation and demolition destroy thousands of nest sites annually
Swift bricks and boxes successfully attract nesting pairs when placed correctly

Welfare Considerations

Swift welfare is critically tied to nest site availability. Pairs returning from Africa to find their nest site destroyed face significant welfare consequences — loss of the breeding opportunity, extended searching, and in some cases failure to find alternative sites. Swift bricks installed at height on south-facing walls provide reliable long-term nest sites. Planning conditions requiring swift brick installation in new developments and refurbishments are increasingly being adopted.

What You Can Do

Install swift nest boxes or bricks on appropriate buildings (south-facing, at height)
Advocate for planning authorities to require swift bricks in all new developments
Record swift screaming parties above rooftops to identify active colonies for protection
Support Swift Conservation and RSPB swift nest site recording programmes