Wild Common Swift Welfare and Conservation

Welfare of common swifts (Apus apus) in the wild, covering their remarkable aerial lifestyle, nesting site loss, and the threats they face from building renovation and climate change.

Key Facts

Common swifts spend almost their entire lives in the air, landing only to nest — young swifts may fly for 3 years without landing
Swift populations have declined by over 50% in the UK since 1995, primarily due to loss of nesting sites
Modern building construction and renovation destroys traditional swift nesting cavities under roof eaves
Swifts have very small feet adapted only for clinging to vertical surfaces, making ground recovery difficult if they fall
Chick mortality is closely tied to cold wet summers that reduce insect availability for aerial feeding
Swifts can live 20 years or more, with high site fidelity — they return to the exact nesting spot each year
Climate change is affecting the timing of insect abundance, creating mismatches with swift chick development

Welfare Considerations

Swift welfare depends almost entirely on two factors: the availability of nest sites and the abundance of aerial insects. Humans have inadvertently destroyed both through building modernization and insecticide use. Individual swifts that become grounded due to injury or cold spell vulnerability face high mortality because most members of the public do not know how to help them safely. Conservation and welfare efforts intersect through swift brick installation in new and renovated buildings, targeted insect-friendly gardening, and public education about the importance of these birds. Supporting swift-friendly building regulations is one of the highest-impact actions individuals can take for this declining species.

What You Can Do

Install swift bricks or boxes on your home before any renovation work affects existing nest sites
Support local planning policies that require swift-friendly features in new building developments
Learn how to safely assist a grounded swift and contact local wildlife rescuers if needed
Plant insect-attracting native flowers and avoid pesticides to support swift food supply
Join local swift monitoring groups to contribute data on nesting sites and population trends
Spread awareness about swift conservation needs among neighbors and community groups