Wild Barn Swallow Population Welfare

Barn swallows are declining across the UK as farmyard habitats change and aerial insect prey declines - understanding causes enables action.

Key Facts

UK barn swallow populations have declined by approximately 30% since the mid-1990s
They are aerial insectivores entirely dependent on flying insects for food
Nesting in open farm buildings is their primary nesting strategy - building renovation eliminates sites
Aerial insect declines driven by pesticide use and habitat loss reduce prey availability
Swallows winter in sub-Saharan Africa facing habitat challenges analogous to corncrakes
Climate change is affecting both insect prey availability and weather conditions on migration

Welfare Considerations

Barn swallow welfare is fundamentally linked to aerial insect abundance. Swallows that cannot find sufficient flying insects to feed themselves and their chicks face starvation and reproductive failure. Insect-friendly farming practices that maintain diverse flying insect communities are the most impactful welfare intervention for aerial insectivores.

What You Can Do

Maintain open access to barns and outbuildings for swallow nesting from March to September
Support insect-friendly farming practices by choosing products from wildlife-friendly farms
Participate in BTO Swallow migration monitoring with BirdTrack sightings
Advocate for pesticide reduction policies that protect aerial insectivore prey
Install swallow nest cups inside barn buildings if natural nest sites are limited