Thousands of birds fall to death from cliffs in "unprecedented wildlife tragedy"

A bird flu outbreak on a UK island chain could kill tens of thousands of seabirds in an "unprecedented wildlife tragedy".

National Trust rangers working on the Farne Islands off the Northumberland coast have so far collected well over 3,000 dead birds for incineration.

But they fear that many thousands more have succumbed to the deadly disease and fallen off the cliffs into the North Sea.