Avian flu is decimating wild birds, but could it become a global pandemic?
Today in Focus - A podcast by The Guardian
It is threatening rare species, and causing havoc for chicken farmers. Now a strain of bird flu has spread to mammals. Could it be a danger to humans?. Help support our independent journalism at <a href="https://www.theguardian.com/infocus">theguardian.com/infocus</a>
