England is tightening controls for poultry and other captive birds after an increase in avian influenza findings. The November 11 announcement introduces an England-wide prevention zone with mandatory biosecurity measures immediately. The separate housing requirement starts at 00:01 on Friday, November 13.

The housing measures cover keepers with 50 or more birds, subject to specified exceptions, and keepers who sell or give away eggs, poultry products or live birds. The announcement distinguishes that scope from the biosecurity measures, which apply to all bird keepers, including small backyard flocks.

The controls include reducing contact with wild birds, cleaning and disinfecting equipment and clothing, and limiting movements around kept birds. The announcement concerns England; it should not be treated as an identical order for every UK nation. Keepers can consult the prevention-zone declaration for the complete requirements.