Ivory GullPagophila eburneaWhere and when to see them

The ivory gull is a high-Arctic seabird closely associated with sea ice. Adults are almost entirely white, an unusual appearance among gulls, while young birds carry scattered dark markings. It breeds in remote Arctic terrain and spends much of its life near ice-covered seas. Its reliance on these environments makes changing sea-ice conditions especially consequential, alongside contaminant exposure and the vulnerability of small, widely separated breeding colonies.

Size

40–43 cm long; 108–120 cm wingspan

Weight

450–700 g

Lifespan

Not reliably established

Status

Near Threatened

Ivory gulls search ice edges and leads for food, sometimes hovering briefly before taking prey from the surface. They also scavenge at marine mammal carcasses and may follow polar bears to exploit remains. Breeding occurs in colonies on isolated cliffs, rocky outcrops or gravel areas. Outside nesting, birds can gather around concentrated food, but their movements are strongly influenced by ice and access to open water rather than fixed tourist routes. They are largely solitary or found in small groups outside the breeding season, not forming large feeding flocks like many other gull species. During breeding, colonies can range from a few pairs to several hundred, often nesting on steep, inaccessible cliffs. Their movements track the shifting ice, often appearing in areas rich with marine mammal activity.

• It is the only living species in the genus Pagophila.
• Juveniles have scattered dark spots that adults lose.
• Some colonies occupy isolated mountain outcrops surrounded by glaciers.
• Scavenging behind polar bears links its feeding ecology to the sea-ice food web.

The Arctic summer provides daylight and the most practical coastal or deck observation conditions. Actual opportunities depend on regional ice conditions and lawful access, not simply month. Winter movements occur around pack ice, but accessible shore sightings are generally exceptional. While generally elusive, summer cruises focusing on high Arctic regions like Svalbard or Franz Josef Land offer the best chances. Early summer is often key for observing breeding colonies before the ice recedes too much. However, their presence is always contingent on local ice conditions which can vary annually.

Pack ice, ice margins, leads and nearby polar seas form its principal habitat. Nesting sites include remote nunataks, cliffs and barren islands, sometimes far inland but linked to marine feeding areas. Most suitable terrain is inaccessible without specialised Arctic travel. They are circumpolar, found throughout the high Arctic regions of North America, Greenland, Svalbard, and Russia. Their breeding range is restricted to the high Arctic, typically above 70° N latitude. During the non-breeding season, they may wander further south with the pack ice.

Small fish and marine invertebrates are taken near the water surface or ice edge. Carrion and scraps from seal or whale carcasses are also important opportunities. This combination of predation and scavenging allows feeding where open water is limited and unpredictable. They have an unusual diet among gulls, relying heavily on scavenging and often being the first bird species to arrive at fresh carcasses. This opportunistic feeding strategy allows them to thrive in nutrient-poor polar environments. They are also known to take eggs and young from other seabird colonies, demonstrating their adaptability.

Common name

Ivory Gull

Scientific name

Pagophila eburnea

Animal group

Birds

Size

40–43 cm long; 108–120 cm wingspan

Weight

450–700 g

Lifespan

Not reliably established

Status

Near Threatened

Identification

Adults are entirely white with black legs and a bluish bill tipped yellow, unlike glaucous gulls, which are larger and retain pale grey upperwings. Juveniles are largely white but show fine black flecks on the wingtips, tail, and sometimes a dusky mask, gradually becoming pure white over two to three years. Their relatively small size compared to other Arctic gulls, like Glaucous or Iceland Gulls, is another key identification feature. The distinctive black legs are visible even at a distance.