How human disturbance affects shorebird nesting success and welfare on beaches and coastal habitats.
Shorebird nesting disturbance causes both individual welfare harm and population-level consequences. Individual birds flushed repeatedly from nests experience acute stress responses, and prolonged absence from eggs exposes developing embryos to lethal temperature swings. Chicks exposed during cold or hot conditions may die from hypothermia or hyperthermia. Nest abandonment from repeated disturbance means individual adults invest weeks of energy and risk in breeding attempts that fail entirely. Simple, low-cost interventions — beach fencing, signage, and dog control — can prevent most disturbance-related welfare harm.