The detection of bird flu in a sheep is another sign that the H5N1 virus is adapting to hop to new hosts

Here is a list of the types of mammals, other than humans, in which the virus - which has also infected hundreds of wild and captive bird species - has been detected between 2016

The world's first case of bird flu in sheep has been found in the UK, the nation's chief veterinary officer has confirmed. The exact location of the farm has not been revealed, but a government spokesperson said the case was identified on a site in Yorkshire where bird flu had been confirmed in captive birds.