Barn Swallow Conservation: Farmland Insects and Nest Sites

Barn swallows have declined by 46% in Britain since 1970 due to loss of insect prey and nest sites in farm buildings, requiring integrated conservation.

Key Facts

UK barn swallow population declined by 46% between 1970 and 2019
Swallows nest in traditional farm buildings, barns and stables accessing the interior through open doors
Insect decline particularly at watercourses has reduced prey availability for chick rearing
Chicks that are fed inadequate insects develop slowly and may not complete migration successfully
Agricultural buildings with open access points are critical for swallow conservation in farmed landscapes

Welfare Considerations

Swallow welfare is affected by insect availability and nest site access during the brief British breeding season. Chicks fed inadequate insects face starvation or delayed development that reduces survival probability during the subsequent migration to sub-Saharan Africa. Sealing farm buildings to exclude swallows destroys colonies established over generations. Maintaining open access to farm buildings and creating insect-rich habitat near breeding colonies directly benefits individual swallow welfare during the critical chick-rearing period.

What You Can Do

Keep barn and stable doors accessible for swallows during the breeding season from April to August
Create insect-rich habitats near swallow breeding colonies using native plants and reduced pesticide use
Install swallow nest cups in farm buildings as supplementary nest provision
Participate in swallow monitoring programmes tracking population trends