Wildlife Welfare

Wild Dipper Cold Weather Welfare

Dippers are unique aquatic passerines whose welfare in winter depends on access to fast-flowing, ice-free stream sections for their underwater foraging.

Key Facts

Dippers are the only passerbird that walks underwater to feed on stream invertebrates
They require fast-flowing sections of upland streams that resist freezing
Prolonged freezing forces dippers to move downstream to lower, milder river sections
Water pollution that reduces invertebrate abundance affects dipper feeding success
Dippers are sensitive indicators of upland stream health and water quality

Welfare Considerations

Dipper welfare in cold periods depends on access to ice-free fast-flowing water with adequate invertebrate prey. Their dependence on stream invertebrates makes them acutely sensitive to both water quality and temperature, linking their individual welfare to broader catchment health.

What You Can Do

Support upland stream restoration projects that maintain invertebrate communities
Report dipper presence to BTO surveys to contribute to population monitoring
Advocate for water quality standards that maintain macroinvertebrate communities in upland streams