Testing has confirmed a second case of H5N1 in a giant petrel found near Esperance. Meanwhile, shares in Inghams dropped as much as 14 per cent as the company revealed it had locked down its WA operations.

Agriculture Minister Julie Collins announced on Friday a bird has died and the initial test was positive for H5N1. Further tests will be performed for confirmation.

The first suspected case of a deadly strain of bird flu that has killed millions of birds and mammals worldwide has been found in Western Australia, the federal government has…