Bird flu confirmed in dead swan found in Scotland near Cellardyke in Fife
Poultry movements have been restricted in the Fife area following the discovery of the bird.
The H5N1 virus does not at present pose a large-scale threat to humans, as it cannot pass easily from one person to another.
But experts fear the virus could mutate to gain this ability, and in its new form trigger a flu pandemic, potentially putting millions of human lives at risk.