Common sandpiper breeding success along UK rivers is a sensitive indicator of river quality and management, linking individual welfare to broader ecological health.
Sandpiper breeding success directly reflects the welfare of individual breeding pairs and their chicks. Pairs that cannot provision chicks adequately experience failed breeding seasons after the energy investment of migration, territory establishment, and nest building. This welfare cost compounds across the population when river quality degradation affects multiple territories simultaneously. Improving river quality therefore simultaneously improves individual welfare and population viability.