Barn Swallow: Agricultural Welfare Science

Key Welfare Facts

Barn swallows declined by 44% in the UK since 1970 as agricultural intensification reduced flying insect populations.
They nest exclusively inside farm buildings, barns, and outbuildings, requiring open access throughout the season.
Chick welfare depends entirely on abundant flying insects within foraging range of nest sites.
Building renovation sealing traditional nest sites removes nesting access, displacing entire family groups.
Insecticide use reducing farmland flying insect abundance is a primary driver of population and welfare decline.
Autumn staging flocks at reed beds before migration have welfare implications from site disturbance.

Welfare Assessment

Barn swallow welfare depends on maintaining open access to farm buildings for nesting and reducing insecticide use that depletes their prey base. Supporting wildlife-friendly farming and ensuring swallow access to traditional nest sites are the most practical welfare interventions.

What You Can Do

Maintain open access points in farm buildings throughout the swallow breeding season
Reduce insecticide use to support flying insect abundance on which swallows depend
Support agri-environment schemes improving farmland insect diversity and abundance
Record swallow breeding success at farm buildings for national monitoring schemes