Wild Birds

Barn Swallow Migration: Conservation and Welfare

Barn swallows undertake extraordinary migrations of up to 10,000km twice yearly, facing growing threats including insect decline, habitat loss, and climate-related weather extremes.

Key Facts

Barn swallows migrate from Europe to sub-Saharan Africa and back annually
A single swallow may catch 60 insects per hour during breeding season
Insect decline has reduced breeding success by 25% in many European populations
Climate change is altering arrival timing and creating mismatches with insect emergence
Aerial insectivore populations have declined 30% across North America since 1970

Welfare Considerations

Migrating swallows face exhaustion, dehydration, and starvation, particularly when encountering unusual weather systems. Nest site loss through building renovation deprives breeding pairs of vital resources. The chronic stress of insufficient food during insectivore decline represents a population-level welfare concern.

What You Can Do

Install purpose-built swallow nest cups on outbuildings
Delay building maintenance work until after swallows have finished breeding
Reduce pesticide use to support insect populations that swallows depend on
Support agri-environment schemes that maintain rough grassland for foraging
Participate in swallow arrival monitoring citizen science programs