The grey heron, a patient and skilled predator of wetland habitats, faces welfare challenges from water pollution, prey depletion, and human disturbance at fishing sites.
Heron welfare is closely linked to wetland ecosystem health. Food-stressed herons expend enormous energy in unsuccessful foraging bouts, depleting reserves needed for temperature regulation and immune function. Secondary poisoning from rodenticide-contaminated prey causes prolonged suffering in affected individuals. The highly territorial nature of herons means that conflicts at productive fishing sites cause chronic stress to subordinate individuals excluded from the best foraging spots. Protecting wetland water quality and prey abundance directly benefits heron welfare.