Greater Crested Terns (Thalasseus bergii) with chick on Penguin IslandCalistemon, CC BY-SA 4.0, via Wikimedia Commons

Greater Crested Tern

Thalasseus bergii

Confirmed infectedhigh flu risk

Found in: South Australia, Victoria, Western Australia

Conservation status: least concern

Colonial seabird; multiple confirmed H5N1 detections including a large mortality event at Baudin Rocks, SA.

References

  1. 'Grim news': Penguin alert as bird flu outbreak worsens — Australian Associated Press (2026)
  2. Animal Disease Events — Australia, Influenza-Avian — FAO EMPRES-i+