Grey herons and egrets are charismatic wetland birds that have recovered significantly under legal protection. Their welfare in managed fisheries, wetland habitats, and urban environments is increasingly relevant.
Herons present an interesting welfare perspective as both subjects and agents of welfare harm. Their own welfare is affected by habitat quality, food availability, and human disturbance at nesting colonies. As predators, they cause welfare harm to the fish and frogs they catch and swallow alive — a natural process but one that involves genuine pain in the prey if fish and amphibian pain capacity is accepted. Legal protection has improved heron welfare dramatically compared to Victorian-era persecution. Fish farm conflict continues to create welfare issues where deterrence methods cause stress, and lethal control under licence causes direct harm.