Great Shearwater illustration
Birdsong field guide

Great Shearwater

Ardenna gravis

A large, migratory pelagic seabird distinguished by its dark cap, white collar, and impressive trans-equatorial flights across the Atlantic Ocean.

What it sounds like

Generally silent at sea; at nesting sites, it emits loud, harsh braying, nasal shrieks, and rhythmic cackling.

Reference call, compare with what you heard
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Rec. Derren Fox · South AfricaCC BY-NC-SAXeno-canto

Field notes

  • Breeds almost exclusively on the remote Tristan da Cunha archipelago and Gough Island in the South Atlantic.
  • Undertakes a massive circular migration, traveling from the South Atlantic to the North Atlantic and back annually.
  • Utilizes dynamic soaring to travel vast distances efficiently, gliding inches above the ocean waves.
  • Features a distinctive dark 'smudge' on the center of its white belly, aiding in field identification.
  • Capable of diving to depths of 20 meters or more to pursue schools of fish and squid.
Habitat
Pelagic; inhabits the open ocean, returning to remote, rocky subantarctic islands for breeding.
Range
Atlantic Ocean; moves between the South Atlantic breeding grounds and the North Atlantic during the boreal summer.

Similar & commonly confused birds

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