What happens now bird flu has reached the Antarctic?

The moment scientists had been dreading arrived late last year,
when H5N1, or bird flu, was found for the first time in the
Antarctic. Last week a king penguin on the island of South Georgia
became the first in the region to be suspected to have died from
the disease. The Guardian’s biodiversity reporter, Phoebe Weston,
tells Ian Sample why researchers have said the spread of bird flu
through the Antarctic’s penguin colonies could signal ‘one of the
largest ecological disasters of modern times’. Help support our
independent journalism at theguardian.com/sciencepod