Crested terns are the latest species in which suspected bird flu cases have been detected in SA. (Andrew Stafford/AAP PHOTOS)Crested terns are the latest species in which suspected bird flu cases have been detected in SA. Another was confirmed in a giant petrel, a sub-Antarctic species found at Port Lincoln in South Australia, bringing the total number of confirmed Australian bird flu cases to 28. He said bird flu presented a risk to more than 600 native species in Victoria. Bird flu has caused havoc in the poultry industry globally, causing the deaths of about 140 million birds since January last year.