A suspected case of bird flu has been found on a poultry farm in Lancashire, the Department for Environment, Food and Rural Affairs (Defra) has said.
A 10km temporary control zone has been set up around the farm, and all birds on site will be slaughtered as a precautionary measure.
The order means all poultry farms within that area are banned from moving any animals while the order is in place.
Defra said lab tests on the birds were ongoing, but Public Health England has said the risk to health was "very low", while the Food Standards Agency said there was no food safety risk.
Chief vet Nigel Gibbens urged bird keepers to stay vigilant for any signs of disease in their flock.