Definitive requirements are set out in the published declarations for each disease control zone currently in force. More information is available on GOV.​UK: https://www.gov.uk/bird-flu

All bird keepers should remain vigilant and still follow enhanced biosecurity measures to prevent future outbreaks.

You can also check if specific areas are in a zone by using the following interactive map: https://defra.maps.arcgis.com/apps/webappviewer/index.html?id=8cb1883eda5547c6b91b5d5e6aeba90d