From Monday 7th November it will be a legal requirement for 'all bird keepers to keep their birds indoors and to follow stringent biosecurity measures to help protect their flocks from the disease, regardless of type or size'.
This means that whether you have 2 chickens in your backyard or a large free range-flock you need to take measures to house them in a solid structure. This doesn't necessarily mean a purpose-built building, the regulations offer alternative structures such as sheds or polytunnels, providing they have adequate light and ventilation.
Where it is not possible to put your birds into a solid structured house you must take measures to stop them from mixing with wild birds. This can be achieved by placing them in an enclosure or temporary structure that is covered in mesh with holes no greater than 2-5cm.
Care should be taken to block holes or gaps where wild birds may be able to get in, keeping your birds contained and unable to mix with wild birds is critical.
Bedding and feed must be stored in a sheltered enclosed area and when you provide food and water to your flock it must be done indoors.
Whilst the requirements may seem excessive the Chief Veterinary Office for the U.K has stated that 'Scrupulous biosecurity and separating flocks in all ways from wild birds remain the best form of defence.'