Birds Daytime

South Polar Skua

Stercorarius maccormicki

iNaturalist eBird Wikipedia

A legendary Antarctic voyager, the South Polar Skua is a powerful predator that ranges from the southern ice caps to the North Pacific. Known for its 'piratical' behavior and incredible migratory range, it is one of the most resilient birds on the planet.

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Quick Identification

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Size

Length: 50–56 cm (20–22 in); Wingspan: 127–140 cm (50–55 in); Weight: 900–1,600 g (2–3.5 lbs)

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Colors

Polymorphic plumage ranging from pale grayish-buff to dark chocolate brown; all morphs feature striking white 'flashes' at the base of the primary wing feathers; dark gray bill and legs.

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Key Features

Prominent white patches at the base of the wings visible in flight
Heavy, barrel-chested body with broad wings
Thick, black bill with a sharp hooked tip
Short, blunt tail compared to more slender jaegers

When You’ll See Them

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Activity pattern Active during the day

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Peak hours 8 AM - 11 AM and 3 PM - 6 PM

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Season November to March (Antarctica); May to September (Northern Hemisphere sightings)

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Diet A generalist predator and scavenger that eats fish, krill, and squid. They are notorious for raiding penguin colonies for eggs and chicks and stealing food from other seabirds.

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Habitat Breeds on rocky Antarctic coastlines and islands; spends the rest of the year in open pelagic waters, occasionally seen from coastal headlands during migration.

Behavior

The South Polar Skua is the ultimate 'pirate of the skies,' known for its incredible boldness and aggressive foraging tactics. It is a master of kleptoparasitism, frequently chasing and harassing other seabirds like gulls, terns, and boobies until they regurgitate or drop their catch. Despite this opportunistic streak, they are also highly capable hunters, often operating alone in the open ocean or in loose groups near high-activity areas like fishing vessels.

During their breeding season in the Antarctic, they are fiercely territorial. They will dive-bomb any intruder—including humans—that wanders too close to their nesting site. Outside of the breeding season, they undertake one of the most impressive migrations in the animal kingdom, traveling from the Antarctic ice edge deep into the Northern Hemisphere, often reaching the North Pacific and Atlantic oceans. They are generally solitary during these long oceanic journeys but are highly social and communicative when congregating at food sources.

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Camera Tips

Capturing a South Polar Skua on an AI-powered camera is a specialized challenge because of their pelagic lifestyle. For the best results, place your camera on high coastal bluffs, rocky outcroppings, or near piers where seabirds are known to rest. Because these birds are attracted to high-vantage points to scan for food, a camera mounted 3 to 5 feet off the ground on a tripod or post—angled slightly downward toward a flat rock—is the ideal setup. In many coastal areas, they may follow fishing boats, so harbor-facing cameras often get lucky shots.

Since Skuas have a highly developed sense of smell and a natural curiosity, using a scent lure can be incredibly effective. A small amount of fish oil or fresh fish scraps placed securely within a rocky crevice (to prevent it from being carried away immediately) can draw them in for a close-up. If you are using an AI camera, set your trigger interval to 'shortest' and your burst mode to 3-5 photos; Skuas are fast-moving birds that may only land for a few seconds to investigate a scent before taking off again.

In terms of lighting, seaside environments often suffer from harsh glare and 'white-out' conditions. If your camera allows for exposure adjustment, slightly underexposing the image can help preserve the detail in the Skua’s white wing flashes, which are its most diagnostic feature. Focus your efforts during the late summer months if you are in the Northern Hemisphere, particularly after heavy storms which may push these ocean-dwelling birds closer to the shore. Early morning and late afternoon provide the best natural light for capturing the subtle brown and gray gradients of their plumage.

Similar Species

Species that look similar or are commonly confused with South Polar Skua.

Brown Skua

The Brown Skua is larger, heavier, and has a more uniform dark brown plumage with less contrast on the head compared to the South Polar Skua.

Pomarine Jaeger

Significantly more slender with a lighter build and longer, twisted tail feathers (in breeding plumage) compared to the stocky Skua.

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Frequently Asked Questions

South Polar Skuas are primarily diurnal. They are most active during the day, with peak hunting and scavenging activity occurring from mid-morning through the late afternoon hours.

Because they are pelagic seabirds, they will not visit typical inland backyards. However, if you live on a coastal cliff or waterfront property, you can attract them with high-resting perches or the scent of fresh fish during their migration windows.

Their diet is highly varied, consisting of fish and krill caught at sea, eggs and chicks from other bird colonies, and food stolen from other seabirds through aggressive aerial chases.

No, South Polar Skuas are strictly marine birds. They are almost never found inland and are usually only seen from the coast or on the open ocean.

The South Polar Skua is much bulkier and 'chestier' than the slender Pomarine Jaeger. Additionally, the Skua has much larger, more obvious white patches at the base of its wing feathers.

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