A dead grey heron found in Lok Ma Chau has been confirmed to be H5N1 positive, the Agriculture, Fisheries & Conservation Department says.

The carcass was found and collected on February 8 near San Sam Road. Grey herons are a waterbird and a common winter visitor to Hong Kong.

There are three commercial chicken farms within 3km of where the bird was found. The department's inspections have confirmed no abnormal mortality or bird flu symptoms among the chicken flocks. The farms will be put under enhanced surveillance.

To avoid the spread of avian flu to people, observe good personal hygiene and avoid personal contact with wild birds and live poultry and their droppings. Clean your hands thoroughly after coming into contact with them. Poultry and eggs should be thoroughly cooked before they are eaten.