Birds Daytime

Pomarine Jaeger

Stercorarius pomarinus

iNaturalist eBird Wikipedia

The powerhouse pirate of the open ocean, the Pomarine Jaeger is a master of aerial pursuit. Known for its unique spoon-shaped tail and bold white wing flashes, this seabird is a rare and rewarding find for any coastal observer.

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Quick Identification

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Size

Length: 46-51 cm (18-20 in); Wingspan: 110-127 cm (43-50 in); Weight: 550-910 g (1.2-2 lbs)

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Colors

Polymorphic plumage; light morphs have a dark cap, white underparts with a dusky breast band, and yellowish neck; dark morphs are entirely chocolate brown; both show white 'windows' on wings.

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Key Features

Broad, twisted, spoon-shaped central tail feathers in adults
Heavy-chested and bulky build compared to other jaegers
Bold white 'flash' at the base of the primary wing feathers
Dark cap that contrasts sharply with pale cheeks in light morphs

When You’ll See Them

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Activity pattern Active during the day

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Peak hours 8 AM - 6 PM

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Season September-November and April-May

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Diet Primarily fish (usually stolen from other birds), but they also consume lemmings, small birds, eggs, and carrion during the breeding season.

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Habitat Open ocean (pelagic) during winter and migration; Arctic tundra for breeding; occasionally seen from coastal piers or large inland lakes during storms.

Behavior

Pomarine Jaegers are the 'pirates of the sky,' famous for their kleptoparasitic lifestyle. They spend much of their time at sea chasing down other seabirds—most notably gulls, terns, and even gannets—to force them to regurgitate or drop their recent catch. They are incredibly powerful flyers, combining the speed of a falcon with the persistence of a hound during these mid-air pursuits.

During the breeding season on the Arctic tundra, their behavior shifts significantly. They become territorial hunters, focusing heavily on lemming populations. Outside of breeding, they are almost entirely pelagic, living solitary lives on the open tropical and subtropical oceans. They rarely come to land except to breed, making them a rare and exciting sight for coastal observers during migration or after heavy storms.

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Camera Tips

To capture a Pomarine Jaeger on a trail camera, location is everything. Because they are pelagic, you must place your camera on high coastal overlooks, rocky jetties, or breakwaters that jut into the ocean. These birds often follow the coastline during migration, especially when 'onshore winds' push them closer to land. Secure your camera to a sturdy post or tripod that can withstand high winds, and use a waterproof housing to protect against salt spray.

The most effective strategy is to aim your camera toward areas of high bird activity. Jaegers are naturally drawn to feeding frenzies of gulls and terns. If you live near a harbor or a coastal area where fish processing occurs, setting up a camera overlooking the water can yield results. They are fast-moving targets, so setting your camera to its highest trigger speed and using 'Burst Mode' (capturing 3-5 photos per trigger) is essential to catch them in frame. High shutter speeds are necessary to freeze the motion of their wings and diagnostic tail feathers.

While you cannot attract them with traditional bird feeders, you can increase your chances by monitoring weather patterns. The best time to check your camera footage is immediately following a 'noreaster' or a tropical storm that has blown seabirds toward the coast. During these events, Jaegers may seek temporary shelter in bays or even large inland lakes, providing a unique window for photography.

Since they are diurnal, ensure your camera is optimized for daylight. Avoid using infrared flashes if possible, as they won't reach the distances required for over-water shots. Instead, focus on maximizing the 'Motion Sensitivity' setting to account for birds flying at a distance. If your camera allows for video, record in 60fps; this will allow you to slow down the footage later to confirm the identity of the bird by looking for those distinctive spoon-shaped tail feathers.

Similar Species

Species that look similar or are commonly confused with Pomarine Jaeger.

Parasitic Jaeger

Smaller and more agile with pointed, rather than blunt/spoon-shaped, central tail feathers.

Long-tailed Jaeger

Much smaller and slimmer with exceptionally long, flexible tail streamers and no breast band.

South Polar Skua

Significantly heavier and broader-winged, lacking the elongated central tail feathers entirely.

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Frequently Asked Questions

Pomarine Jaegers are diurnal, meaning they are active during the day. They are most frequently seen hunting and chasing other birds for food during the middle of the day when visibility is best and their prey is most active.

You cannot attract Pomarine Jaegers to a typical backyard unless you live directly on a coastline. They are pelagic birds that do not visit bird feeders; however, they are drawn to areas with high concentrations of gulls and terns near the water.

Their diet consists largely of fish stolen from other birds through kleptoparasitism. On their Arctic breeding grounds, they switch to hunting lemmings, voles, and the eggs or chicks of other birds.

No, they are very rare in suburban areas. They are ocean-dwelling birds that only occasionally appear near coastal suburbs during migration or after being blown off-course by severe oceanic storms.

Look at the tail and the size. The Pomarine Jaeger is larger and bulkier with blunt, twisted 'spoon-shaped' central tail feathers, whereas the Parasitic Jaeger is smaller and has short, pointed tail spikes.

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