Research: Bird flu (avian influenza): cases in wild birds

Confirmed cases of wild birds with highly pathogenic avian influenza (bird flu) in Great Britain.

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This file may not be suitable for users of assistive technology.

This file may not be suitable for users of assistive technology.

This file may not be suitable for users of assistive technology.

This report is produced by the Animal and Plant Health Agency (APHA). It is updated regularly with findings of highly pathogenic avian influenza (HPAI) – often referred to as bird flu – in wild birds in Great Britain. Updates are recorded in calendar weeks (for example, week 1 is the first week in January).

These are findings of avian influenza from our ongoing routine surveillance for avian influenza in wild birds. This surveillance is made up of patrols by wild bird reserve wardens and collections of found-dead wild birds reported to us by members of the public. This data only represents cases where birds have tested positive for avian influenza.

Avian influenza in wild birds: 2026 updated to week 37.

Updated the 'Avian influenza in wild birds: 2026’ list with data for week 36 of 2026.

Updated the 'Avian influenza in wild birds: 2026’ list with data for week 35 of 2026.

Updated the 'Avian influenza in wild birds: 2026’ list with data for week 34 of 2026.

Updated the 'Avian influenza in wild birds: 2026’ list with data for week 33 of 2026.

Updated the weekly figures for wild birds in Great Britain that tested positive for H5 high pathogenicity avian influenza (HPAI) during week 32 of 2026.

Updated the 'Avian influenza in wild birds: 2026’ list with data for week 31 of 2026.

Updated the 'Avian influenza in wild birds: 2026’ list with data for week 30 of 2026.

Updated weekly number of wild birds in Great Britain testing positive for H5 HPAIV.

Updated the 'Avian influenza in wild birds: 2026’ list with data for week 28 of 2026.