Gray-Crowned Rosy-Finch

leucosticte tephrocotis

The Gray-Crowned Rosy-Finch is a rugged and charismatic songbird built for survival in some of North America's most extreme environments. Living high above the timberline in alpine tundra, talus slopes, and windswept glaciers, this resilient member of the finch family is a true mountaineer. Known for its remarkable tolerance to freezing temperatures, it can often be seen hopping actively across snowfields in search of wind-blown insects and seeds. During the winter, harsh alpine weather drives these hardy birds down to lower elevations, bringing their vibrant presence to mountain valleys and backyard bird feeders. Their highly adaptive foraging strategies and specialized anatomical features allow them to thrive where few other birds dare to nest.

生息地: Typically found in high-altitude alpine tundra, rocky talus slopes, and glaciers above the treeline during the summer, migrating to lower montane valleys in winter.

外見

This medium-sized finch features a warm, dark brown body contrasted beautifully with brilliant rosy-pink washes on its wings, rump, and belly. A distinctive ash-gray patch crowns the back of its head and cheeks, while its forehead is marked by a stark black patch. Its bill undergoes a striking seasonal transformation, changing from a sharp, dark black during the breeding season to a bright yellow during the winter months. They have long, pointed wings and a notched tail, which help them navigate the turbulent mountain winds.

界Animalia門Chordata綱Aves目Passeriformes科Fringillidae属Leucosticte

Gray-Crowned Rosy-Finch

カテゴリ

鳥類

レア度

Common

危険度

1/5 · 非常に低い

スナップ

最初にスナップしよう！

おもしろい事実

In severe winter weather, they can form massive nomadic flocks of several thousand birds as they descend into valleys in search of food.

Their specialized throat pouch allows parents to collect and transport dozens of insects at a time back to their hungry chicks.

They are among the highest-altitude nesting birds in all of North America, often building nests in rock crevices above the treeline.

特殊能力

Exhibits specialized foraging behavior by hopping along high-altitude snowfields to harvest frozen, wind-blown insects.

Possesses a unique throat pouch beneath the tongue used to store and carry large quantities of food back to nestlings.

Capable of surviving freezing temperatures and high-velocity winds due to dense, insulating plumage and behavioral roosting in rock cavities.

サイズと詳細

長さ: 14+ cm
翼開長: 30+ cm
体重: 0.022+ kg
寿命: 3+ 年
Top Speed: 45 km/h
一度の産卵数: 3+
抱卵期間: 12+ 日
渡りの距離: 1500 km

食性と食事

Feeds primarily on wind-blown insects frozen in snowfields during the breeding season, switching to a diet of alpine plant seeds in winter.

年齢による違い: Chicks are fed almost exclusively insects and spiders from the parents' gular pouches, while adults transition to seeds and plant matter in the colder months.

主な食物

Alpine grass seeds
Midges
Beetles
Caterpillars
Sedge seeds

採餌方法

Foraging

生態系とのつながり

eaten by

American Kestrel

Falco sparverius

Preys upon adult rosy-finches in open, high-altitude alpine landscapes.

eaten by

Ermine

Mustela erminea

Raids high-altitude rocky nests to consume unguarded eggs and nestlings.

mutualism

Mountain Avens

Dryas octopetala

Provides critical seed resources for the finch during early spring and summer foraging.

特徴

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別名

まだ別名はありません。

コレクション

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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

Gray-Crowned Rosy-Finchを見分けるには？

Gray-Crowned Rosy-Finch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。

Gray-Crowned Rosy-Finchの長さは何ですか？

14+ cm

Gray-Crowned Rosy-Finchの翼開長は何ですか？

30+ cm

Gray-Crowned Rosy-Finchの体重は何ですか？

0.022+ kg

Gray-Crowned Rosy-Finchの寿命は何ですか？

3+ 年

Gray-Crowned Rosy-Finchのtop Speedは何ですか？

45 km/h

Gray-Crowned Rosy-Finchは何を食べますか？

Feeds primarily on wind-blown insects frozen in snowfields during the breeding season, switching to a diet of alpine plant seeds in winter.

Gray-Crowned Rosy-Finchは通常どこに生息していますか？

Typically found in high-altitude alpine tundra, rocky talus slopes, and glaciers above the treeline during the summer, migrating to lower montane valleys in winter.