Bird flu in England: what April 2026 zones mean

As of Friday 17 April 2026, Defra and the Animal and Plant Health Agency said H5N1 had been confirmed in a fourth large commercial poultry unit near Gainsborough, West Lindsey, Lincolnshire. A 3km protection zone and 10km surveillance zone are now in force around the site, and the poultry on that premises will be humanely culled. (gov.uk) This did not come out of nowhere. Defra had already confirmed a further large commercial unit near Gainsborough and another near Great Shelford, South Cambridgeshire, on 14 April, plus an earlier Lincolnshire case near Market Rasen on 11 April. If you are reading this on Saturday 18 April 2026, the immediate takeaway is clear: this week has brought a tight cluster of new English outbreaks and a fresh need for local keepers to check the official disease zone map. (gov.uk)

Bird flu, or avian influenza, is a virus that mainly affects birds. The strain in these latest English outbreaks is H5N1, and official guidance says wild birds are the natural hosts, with infection spreading through direct contact, feathers, faeces and contaminated environments. (gov.uk) **What this means:** the danger is much greater for birds than for people. Defra’s 14 April national summary said the 2025 to 2026 outbreak season had already reached 99 confirmed HPAI H5N1 cases across the UK, plus one low pathogenic case, with England accounting for 78 of the HPAI detections. That was already above the 82 HPAI cases recorded in the whole 2024 to 2025 season, although still far below the 207 seen in 2022 to 2023. (gov.uk)

The outbreak season is counted from 1 October to 30 September. Defra says the first H5N1 case of the 2025 to 2026 season was confirmed on 9 October 2025 in Northern Ireland, 11 October in England, 25 October in Wales and 12 November in Scotland. Under World Organisation for Animal Health rules, that means the UK is no longer classed as free from highly pathogenic avian influenza. (gov.uk) When officials declare a 3km protection zone and a 10km surveillance zone, they are creating legal disease control areas around an infected premises. For people inside them, the key question is practical: you may have to follow local zone rules and check whether you need a licence before moving poultry, eggs, by-products, material or mammals. (gov.uk)

One part of this story can feel brutal, and it is the part many readers ask about first: why are birds culled? Defra’s current policy is that infected poultry or captive birds on affected premises are humanely culled because rapid action, surveillance and strong biosecurity remain the most effective way to control an outbreak in kept birds. The aim is to stop the virus multiplying on a site and contaminating the surrounding environment. (gov.uk) There is an important distinction here. Government guidance says culling is used on infected kept-bird premises, but it is not considered an effective or feasible way to control bird flu in wild bird populations. That is why the response to wild birds focuses much more on surveillance, reporting and public advice than on mass culls. (gov.uk)

The rules can sound muddled because there is more than one kind of control. On 2 April 2026, Defra announced that the national housing measures would be lifted from Thursday 9 April, meaning birds in England and Wales could go outside again unless they were in a protection zone or a captive bird monitoring controlled zone. The housing order changed, but the Avian Influenza Prevention Zone did not vanish: mandatory biosecurity rules still remain in place. (gov.uk) **What this means:** a lower risk is not the same thing as no risk. Defra lifted housing because the latest assessment showed reduced HPAI levels in wild birds and poultry, but officials kept the AIPZ biosecurity measures in place and said bird gatherings still remain subject to general or specific licences. (gov.uk)

If you are not a bird keeper, the public-health picture is very different from the animal-health picture. The UK Health Security Agency says bird flu is primarily a disease of birds and the risk to the general public is very low. The Food Standards Agency says the food safety risk is also very low, and properly cooked poultry, eggs and other poultry products remain safe to eat. (gov.uk) The NHS adds an important caveat: humans can catch bird flu through close contact with infected birds, droppings or dead birds, but it remains very rare in the UK. So the right public response is not panic. It is avoiding direct contact with sick or dead birds and washing your hands if you have touched feathers or bird faeces. (nhs.uk)

For most of us, the advice is straightforward. Do not touch or move dead or sick wild birds. Report dead wild birds to Defra instead, because reports may be used for collection and testing; in Great Britain, the reporting line is 03459 33 55 77 as well as the online service. If you feed garden birds, keep feeders and water baths clean, and wash your hands with soap and water afterwards. (gov.uk) There are also some place-based rules that are easy to miss. Defra says you can feed wild birds, but you should avoid areas near premises where poultry or captive birds are kept, because wild birds can spread infection to captive birds. In an Avian Influenza Prevention Zone, you must not feed wild gamebirds within 500 metres of a premises with more than 500 poultry or captive birds. (gov.uk)

If you keep birds yourself, the teaching point is this: bird flu is a notifiable disease. Official guidance says some waterfowl can carry the virus without obvious illness, and even milder strains can be hard to spot without laboratory testing. If you suspect bird flu in poultry or other captive birds, you or your vet must report it immediately to APHA; in England the reporting number is 03000 200 301. (gov.uk) That same reporting duty now extends beyond birds. Government guidance says influenza of avian origin is notifiable in both wild and kept mammals, and reports in Great Britain should be made immediately if a mammal may be infected or shows evidence of the virus or antibodies. At the same time, officials say findings in mammals are uncommon, evidence of mammal-to-mammal spread in the wild remains very limited, and the risk to the general population from infected non-avian wildlife is very low. (gov.uk)

Vaccines are the other question people ask straight away: if this keeps happening, why not vaccinate every flock? The official answer in England is that poultry and most captive birds cannot currently be vaccinated, apart from zoo birds that meet the rules and get APHA authorisation. Defra says wider vaccination is restricted because current vaccines can still leave some birds able to transmit disease without obvious signs, and trade and surveillance concerns make broad use difficult. (gov.uk) That said, policy is not standing still. Defra, APHA and ministers announced new turkey vaccine trials on 5 March 2026 to test how newer vaccines work in real conditions. So if you are wondering whether vaccination is being ignored, the fairer reading is this: the government is still relying on biosecurity, reporting and culling today, while trying to gather better evidence for what vaccination could look like tomorrow. (gov.uk)