Australasian Gannet illustration
Birdsong field guide

Australasian Gannet

Morus serrator

A large, striking seabird characterized by its white plumage, black-tipped wings, and golden-yellow head, renowned for dramatic high-speed plunge-diving. It is a highly social species that forms dense, noisy breeding colonies on coastal islands and mainland cliffs.

What it sounds like

A loud, harsh, and rhythmic 'urrah-urrah' or 'kara-kara' vocalization, most prevalent and chaotic within breeding colonies.

Reference call, compare with what you heard
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Rec. Chris Benesh · New ZealandCC BY-NC-SAXeno-canto

Field notes

  • Lacks external nostrils and possesses internal air sacs in the face and chest to cushion the impact of hitting the water at speeds up to 100 km/h.
  • Equipped with binocular vision that allows for precise depth perception when targeting prey from heights of up to 30 meters.
  • Juvenile birds undertake a massive trans-Tasman migration, flying from New Zealand to Australia shortly after fledging and remaining there for several years.
  • Pairs engage in elaborate mutual 'sky-pointing' and 'billing' displays to reinforce social bonds and signal nest ownership.
  • To facilitate high-speed diving, they have evolved specialized facial skin that allows them to breathe through the corners of their mouths.
Habitat
Temperate marine waters, offshore islands, and steep coastal mainland cliffs.
Range
Southern Australia, New Zealand, and surrounding islands including the Norfolk and Lord Howe groups.

Similar & commonly confused birds

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