Ivory Gull

pagophila eburnea

The Ivory Gull is a ghostly, breathtakingly beautiful seabird of the High Arctic, immediately recognizable by its pure, snow-white plumage. Inhabiting some of the harshest environments on Earth, this medium-sized gull remains associated with pack ice throughout the year, rarely venturing far south. It is an incredibly resilient species, possessing remarkable adaptations that allow it to thrive where few other birds can survive. Known as a scavenger of the frozen north, the Ivory Gull is famously seen trailing polar bears across the endless ice fields. It feeds opportunistically on seal carcasses, fish, and marine invertebrates. Sadly, this elegant 'ghost of the Arctic' faces significant threats from climate change and melting sea ice, making it an important indicator species for the health of our polar ecosystems.

生息地: Typically found in the extreme High Arctic, nesting on remote nunataks, gravel cliffs, and rocky islands, while foraging primarily along the edges of pack ice.

外見

Adult Ivory Gulls are entirely pristine white, lacking the grey or black markings typical of other gull species. They have a compact, pigeon-like profile with a relatively small head, short black legs, and dark, large-looking eyes. Their bill is distinctive, showing a slate-blue color at the base that transitions to a yellow or orange tip. Juveniles have a speckled appearance, covered with delicate black spots on their face, wings, and tail, which gradually fade over their first two years. Adults measure about 40 to 45 centimeters in length with a broad, powerful wingspan of roughly 110 centimeters, enabling agile flight in strong polar winds.

界Animalia門Chordata綱Aves目Charadriiformes科Laridae属Pagophila

Ivory Gull

カテゴリ

鳥類

レア度

Common

危険度

1/5 · 非常に低い

スナップ

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おもしろい事実

Because they feed at the top of the Arctic food web via scavenging, they accumulate some of the highest concentrations of mercury and organochlorines of any Arctic bird.

Ivory Gulls often nest on nunataks, which are isolated mountain peaks that project through the surface of glaciers and ice sheets.

They avoid swimming in open water whenever possible, preferring to land on ice floes, frozen ground, or carcasses instead of resting on the ocean surface.

Unlike almost all other gulls, adult Ivory Gulls are entirely pure white, with absolutely no grey, brown, or black feathers on their wings or back.

特殊能力

They possess an exceptionally dense layer of down feathers and specialized blood circulation in their legs to prevent heat loss in freezing Arctic temperatures.

Their pure white plumage provides perfect camouflage against the snow and ice, hiding them from aerial predators like gyrfalcons.

They have developed highly keen eyesight and a superb sense of navigation to locate marine mammal carcasses across vast, featureless ice fields.

サイズと詳細

長さ: 40+ cm
翼開長: 100+ cm
体重: 0.45+ kg
寿命: 15+ 年
Top Speed: 60 km/h
一度の産卵数: 1+
抱卵期間: 24+ 日
渡りの距離: 3000 km

食性と食事

The Ivory Gull is an opportunistic carnivore and scavenger, consuming fish, marine invertebrates, and the remains of animals left behind by apex predators.

年齢による違い: Chicks are fed primarily small fish and marine invertebrates by parents, transitioning to a more opportunistic scavenger diet as they mature.

主な食物

Polar Cod
Amphipods
Seal carrion
Whale blubber
Lanternfish

採餌方法

Foraging

生態系とのつながり

competitor

Polar Bear

Ursus maritimus

Following the apex predator to scavenge leftovers from seal kills.

eaten by

Arctic Fox

Vulpes lagopus

Preys upon eggs and chicks in nesting colonies.

hunts

Polar Cod

Boreogadus saida

Actively hunted by the Ivory Gull as a primary marine food source.

特徴

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別名

まだ別名はありません。

コレクション

テーマが追加されると、このオブジェクトのコレクションがここに表示されます。

安全性

危険度

1/5 · 非常に低い

まだ特別な安全上の注意はありません。

よくある質問

Ivory Gullを見分けるには？

Ivory Gullを識別する最も簡単な方法は、Snappit自然識別アプリを使用することです。

Ivory Gullの長さは何ですか？

40+ cm

Ivory Gullの翼開長は何ですか？

100+ cm

Ivory Gullの体重は何ですか？

0.45+ kg

Ivory Gullの寿命は何ですか？

15+ 年

Ivory Gullのtop Speedは何ですか？

60 km/h

Ivory Gullは何を食べますか？

The Ivory Gull is an opportunistic carnivore and scavenger, consuming fish, marine invertebrates, and the remains of animals left behind by apex predators.

Ivory Gullは通常どこに生息していますか？

Typically found in the extreme High Arctic, nesting on remote nunataks, gravel cliffs, and rocky islands, while foraging primarily along the edges of pack ice.