Bird flu in England: first farm outbreak of the season in Northumberland — what it means for owners of poultry, cats and dogs

What happened in Northumberland

On 19 October 2026 the Department for Environment, Food and Rural Affairs (Defra) and the Animal and Plant Health Agency (APHA) confirmed highly pathogenic avian influenza of the H5N1 subtype at a commercial poultry premises near Belford in the north of Northumberland. The case has been given the reference AIV 2026/21.

According to trade press reports, the farm kept around 30,500 laying hens. All birds on the premises will be humanely culled — a standard measure to stop the virus spreading further. How it reached the farm has not yet been established: the investigation is ongoing.

What the zones around the farm mean

A 3-kilometre protection zone and a 10-kilometre surveillance zone have been put in place around the premises. Special rules apply within them to everyone who keeps birds — large farms and people with a handful of hens alike. Poultry, poultry products, eggs, litter and other materials, and in some cases mammals, may only be moved under a specific licence. Veterinary inspectors check premises in the zones, and the restrictions are lifted once the risk of spread falls.

Defra publishes the zone boundaries on an interactive map. If you live in Northumberland and keep birds, check whether your address falls within one of the zones and which rules apply to you.

The season in the UK and Europe

This is already the UK's second case of the season. On 2 October avian influenza of the H5N5 subtype was found in birds on the Isle of Lewis in Scotland. As a result the country lost its status as free from highly pathogenic avian influenza — it can only be regained after a period without new cases.

H5N1 and H5N5 are different variants of the H5 subtype. Both are dangerous to birds, both are carried by wild birds, and the measures against them are the same.

England is not the only country where the season has begun. In late October Denmark reported outbreaks on turkey farms, and in Germany the virus was confirmed on three farms in Schleswig-Holstein. According to industry summaries for 21–26 October, since the start of 2026 Europe has recorded more than 300 outbreaks in domestic poultry in 16 countries and around 2,700 cases in wild birds in 33 countries. Detections usually rise with the autumn migration, so veterinary services in many countries are watching wild birds especially closely and asking the public to report every suspicious find.

How high is the risk

UK veterinary experts assess the risk of highly pathogenic avian influenza in wild birds as medium: such findings are regular. For kept poultry the risk is low where biosecurity is poor and very low on premises that apply it strictly and consistently. Both assessments come with a caveat of high uncertainty — in autumn the situation can change quickly.

Bird flu is primarily a disease of birds, and the risk to public health is very low.

UK Health Security Agency (UKHSA)

The Food Standards Agency (FSA) reminds consumers that properly cooked poultry and eggs are safe to eat.

Why the virus returns every autumn

Avian influenza is spread mainly by wild waterfowl — ducks, geese, swans and gulls. In autumn millions of birds migrate through northern Europe and the British Isles to their wintering grounds, stopping at lakes, coasts and fields. The virus is shed in droppings and can reach a farm via feed, water, bedding, footwear and vehicles.

The H5N1 variant that has spread across Europe since 2020–2021 is well adapted to wild birds: it no longer disappears in summer as it used to, but persists all year round. That is why outbreaks now occur almost every autumn and winter.

The more virus there is in the environment, the more often it reaches mammals that eat birds. In the UK it has been found in previous seasons in foxes, otters and seals. That is one of the reasons vets ask cat and dog owners to be especially careful in these months.

How to recognise bird flu in chickens

Highly pathogenic avian influenza progresses very quickly, and the first sign is often the sudden death of several birds. You should also be alert to:

• lethargy, ruffled feathers, refusal of food and water;
• a sharp drop in egg production, eggs with thin or soft shells;
• swelling of the head and neck, a bluish or dark comb and wattles;
• discharge from the beak and eyes, difficulty breathing, diarrhoea;
• loss of coordination: the bird staggers, falls over or holds its head at an odd angle.

Avian influenza is a notifiable disease. If you suspect it in your birds, do not take them anywhere yourself: call your vet or the veterinary authorities and follow their instructions.

What happens to the farm and its products

Birds on a premises where the virus is confirmed are culled and disposed of under veterinary supervision, and the buildings are then cleansed and disinfected. In the UK the keeper receives compensation for healthy birds that had to be culled to control the disease. Eggs and meat from an infected premises do not enter the food chain, so shoppers do not need to change their habits — it is enough to cook poultry thoroughly, as always.

What backyard poultry keepers should do

Many people keep a few hens or ducks for eggs. The virus does not care how many birds are in the garden, so the rules are the same as for farms:

• keep feed and water under cover or indoors so wild birds cannot reach them;
• do not let your birds near ponds and places where wild waterfowl gather;
• keep a separate pair of boots for the hen house or disinfect your footwear before going in;
• keep visitors away from your birds and do not share equipment with neighbours;
• register your birds: in Great Britain all keepers have had to do this since December 2024, even if they only have a few hens — so the veterinary authorities can warn you quickly about an outbreak nearby;
• if anything about your birds' behaviour worries you, report it to your vet or APHA straight away rather than waiting for others to fall ill.

Why H5N1 is dangerous for cats and dogs

Cats are among the few pets that become seriously ill with H5N1. They usually catch it by hunting or eating a sick bird, or by eating raw meat from infected poultry. Europe has already seen such cases, including in Poland in 2023. Affected cats develop a high temperature, stop eating, have difficulty breathing and discharge from the eyes and nose, and later trembling, seizures and loss of coordination.

Dogs are infected far less often, but the same rule applies to them: do not touch or eat dead birds.

If your cat does bring a bird home, don't panic: most birds caught by cats are healthy. Put on gloves or pick up the prey through a bag, tie it tightly and put it in a lidded bin. Wash your hands and the spot where the bird lay. Over the next few days watch your cat: is it eating, is it coughing, lethargic, walking oddly? If you notice any of these signs, call your vet and be sure to mention the contact with the bird — the practice can then see you with the right precautions.

How to protect your pet during the bird flu season

• Keep your dog on a lead near water, on the coast and in fields with lots of wild birds.
• Do not let your dog or cat touch, chew or bring home dead birds.
• Do not feed raw poultry meat or offal of unknown origin.
• If you live near an outbreak, limit your cat's time outdoors where possible.
• If your cat or dog may have had contact with a bird and becomes lethargic, feverish, starts coughing or loses coordination, call your vet and tell the practice about the contact in advance.

What to do if you find a dead bird

Do not touch or move dead or sick wild birds. Report finds of waterfowl, birds of prey or several dead birds in one place to the veterinary authorities — in Great Britain there is a dedicated Defra reporting service for this. If you do touch droppings or feathers, wash your hands thoroughly with soap. Explain to children that birds on the ground must not be touched, even if they want to help.

What happens next

The bird flu season usually lasts until spring. If the risk rises, the authorities may again declare an Avian Influenza Prevention Zone with mandatory biosecurity measures and a housing order, as in previous winters. Follow announcements from Defra and your local veterinary service: they publish new cases, zone maps and rules for bird keepers. Poultry keepers would do well to sign up for APHA's free animal disease alerts: that way you will hear about an outbreak near you the same day.