The warning comes as the risk of bird flu increases, particularly in coastal counties along bird migration routes and in areas with a high concentration of gamebird activity.

The alert applies to all commercial bird keepers, particularly those involved in shoots and game bird rearing.

An Avian Influenza Prevention Zone (AIPZ) remains in force across Great Britain, with updated biosecurity measures updated yesterday for game bird operations in England.

The additional measures reflect the specific risks affecting the shooting and game bird sectors at this time of year and are designed to protect both wild and captive bird populations.

Christine Middlemiss, UK Chief Veterinary Officer, said: “We are seeing increasing outbreaks of avian influenza, particularly in coastal counties.

“Gamebird operations, alongside all other poultry keepers, must take action now to protect their birds and limit the risk of further outbreaks.

“Strong biosecurity remains our best defence, and we urge all keepers to take immediate steps to strengthen their measures.

“We will continue to monitor the situation closely.”

The updated rules require daily disinfection of vehicles, the use of one feeding station per 60 birds, and daily cleaning of feeding and watering stations.

Feeding is not permitted within 50 metres of water bodies used by wildfowl or within 500 metres of other kept birds.

Game birds should be checked daily for signs of avian influenza during the open season and carcasses of dead birds must be reported to Defra and disposed of appropriately.

All bird keepers are reminded that avian influenza is a notifiable disease. Suspected cases must be reported immediately to the Animal and Plant Health Agency (APHA).

Gatherings of poultry remain banned including transporting birds from multiple locations in a single vehicle and dropping them off at multiple destinations.

The UK Health Security Agency continues to advise that the risk to public health remains very low, and properly cooked poultry, game meat, and eggs remain safe to eat.

A map of disease control zones, restrictions and advice can be found on the government website.