Ivory Gull - Nexta Expeditions
Ivory Gull

Ivory Gull

These "sea ice lovers" have been decreasing since the 1980s, but it's unclear if they're moving to new places or facing extinction.
About

Name: Ivory Gull, Goéland Sénateur, Mouette Blanche, Gaviota Marfil (Pagophila eburnea)

Length: 40-45 cm

Weight: 450-700 grams

Location: The Arctic

Conservation status: Near Threatened

Diet: Crustaceans, rodents, fish, bird eggs and chicks, carrion

Appearance: White with a blue bill tipped in yellow, and black legs

How do Ivory Gulls feed?

Ivory Gulls hunt by hovering and plunging into water to catch fish. They are also scavengers, known to follow Polar Bears for scraps and even consume placentas and fecal matter of Seals and Polar Bears.

Are Ivory Gulls social?

Ivory Gulls nest in colonies, with the largest colony in Russia, hosting about 4,500 breeding pairs.

What are Ivory Gulls' birthing rituals like?

Ivory Gulls breed from late June to August in colonies of 5 to 60 pairs. They build nests from various materials like algae, feathers, and seaweed, often placing them on gravel banks, cliff edges, or stone ridges near ice caps. Females lay 1 to 3 brown or olive-colored eggs, which are incubated for around 25 days by both parents. Chicks are born with white feathers and black spots, becoming pure white by their second year.

How many Ivory Gulls are there today?

As of 2012, Birdlife International estimated the global population to be between 19,000 and 27,000 birds. Breakdown by region:

  • Russia: 2,500-10,000
  • Severnaya Zemlya Archipelago: 4,000
  • Franz Josef Land and Victoria Island: 8,000
  • Greenland: 4,000
  • Canada: 500-700

Do Ivory Gulls have any natural predators?

Ivory Gulls are preyed upon by Polar Bears, other birds targeting their young and eggs, and Arctic Foxes. Moose also occasionally disturb their nests.

7 Interesting Ivory Gull Facts

  • Pagophila means “Lover of sea ice” and Eburnea means “Ivory-colored.”
  • They are pellet-casters, like some Owls, regurgitating pellets of bones and fur.
  • Among the northernmost living birds on Earth.
  • Move south only enough to avoid Arctic winter darkness.
  • Studying them is challenging due to their remote habitats across multiple countries.
  • The Canadian population has declined by up to 85% since the 1980s.
  • They have the highest concentrations of PCBs and DDTs in their eggs among birds.

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