Grey Heron Welfare and Fisheries Conflict

The grey heron is a large waterbird that has recovered well following legal protection, but still faces persecution and conflicts with fish farming and angling interests.

Key Facts

Grey heron population in the UK is estimated at around 13,000 breeding pairs
Herons are fully protected under the Wildlife and Countryside Act 1981
Fishing at aquaculture sites causes conflict with fish farm operators
Herons are highly adaptable, nesting in colonies in tall trees near water
Diet includes fish, frogs, small mammals, and large invertebrates

Welfare Considerations

Grey herons face welfare risks from illegal persecution including shooting and trapping near fish farms and garden ponds. Entanglement in fishing line and ingestion of lead weights cause injury and death. Heron colonies are sensitive to disturbance during nesting and require undisturbed woodland near feeding areas. Legal non-lethal deterrents at fish farms including heron guards, netting, and electric fences should be used in preference to lethal control. Public education about heron ecology and legal protection status reduces illegal killing.

What You Can Do

Report suspected illegal killing or trapping of herons to the police and RSPB
Use legally required permits if non-lethal deterrents are insufficient at fish farms
Ensure garden ponds have areas where herons cannot access fish if stocked
Record heron colony locations for Heronries Census through the BTO