Brown Skua illustration
Birdsong field guide

Brown Skua

Stercorarius antarcticus

A large, powerful, and aggressively predatory seabird of the Southern Ocean, known for its heavy build and opportunistic feeding habits.

What it sounds like

A harsh, nasal barking 'gah-gah-gah' and a loud, repetitive long-call delivered with wings raised vertically.

Reference call, compare with what you heard
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Rec. Hichem MACHOUK · FranceCC BY-NC-SAXeno-canto

Field notes

  • Frequently preys on the eggs and chicks of penguins and burrowing petrels during the breeding season.
  • Exhibits intense kleptoparasitism, chasing other seabirds in flight to force them to regurgitate their meals.
  • Distinctive white patches at the base of the primary feathers create a flashing effect visible only when the wings are spread.
  • Highly territorial during nesting, they are known to dive-bomb and physically strike human intruders.
  • Possesses a heavy, hooked bill and strong talons, features more characteristic of a raptor than a typical charadriiform.
Habitat
Coastal tundra, rocky subantarctic islands, and open pelagic waters.
Range
Southern Ocean, including the Antarctic Peninsula and various subantarctic islands.

Similar & commonly confused birds

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