Wildlife

Barn Swallow Welfare: Breeding Habitat Loss in Europe

The barn swallow is a beloved migratory insectivore whose welfare is threatened by the loss of traditional farm buildings for nesting and the decline of aerial insects.

Key Facts

Barn swallow populations have declined by over 50% in the UK since the 1970s
They depend on open farm buildings and livestock sheds for nest sites
Flying insects, especially large dipterans, form the core of their diet during breeding
UK breeding season runs from April to August with pairs raising up to 3 broods

Welfare Considerations

Loss of traditional open farm buildings through renovation or demolition removes nest sites accumulated over generations. Intensive dairy and livestock operations are being replaced by closed buildings that exclude swallows. Insect decline from pesticide use and habitat loss reduces food availability, impairing chick growth and adult survival. Climate change is altering insect emergence timing relative to swallow arrival.

What You Can Do

Keep access points open in farm buildings used by swallows during breeding season
Install nest cups to replace lost natural nest sites
Maintain rough grassland and wetland areas near farms to support insect populations
Record swallow nest counts and submit data to national monitoring schemes