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Scaly-sided Merganser

Mergus squamatus

Endangered

翼開長

51.2 cm

体重

1145.8 g

科

Anatidae

目

Anseriformes

について

カワアイサはロシア極東と中国東北部の急流河川に繁殖し、東アジアで越冬する潜水性カモです。鱗状の羽毛パターンが名前の由来で、雄は緑光沢の黒い頭部と赤い嘴を持ちます。清澄な河川で魚を潜って採食します。絶滅危惧種です。

Physical Description

Measurement	Value	Imperial
翼開長	51.2 cm	20.2 in
体重	1145.8 g	40.42 oz

識別

羽毛

Male has iridescent dark green head with long flat crest, white body with distinctive black scaly pattern on flanks, and black back with white patches. Female has brownish-red crested head and grey body with similar scaly flank pattern.

Habitat & Range

🌲 Forest 🌿 Wetland 🏖️ Coastal

分布域

Breeds in southern Russia, northern China, and the Russian Far East. Winters in southern China and Korea. Found on fast-flowing forested rivers.

Diet & Feeding

Dives for fish in fast-flowing East Asian rivers. Endangered; highly piscivorous with serrated bill adapted for catching slippery fish.

保全状況

Endangered

IUCN Red List

行動と繁殖

営巣

Nest type: CV,O. Incubation: 31-35 days. Fledging: 56 days.

一腹卵数

4-14

鳴き声

さえずり

Male gives a quiet, low grunting call; female produces a guttural, croaking series. Endangered; calls are poorly known; similar to Red-breasted Merganser but quieter in Manchurian forest rivers.

分類学

Kingdom	Animalia
Phylum	Chordata
Class	Aves
目	Anseriformes (Waterfowl)
科	Anatidae (Ducks, Geese & Swans)
Genus	Mergus
種	Mergus squamatus

Distribution

Scaly-sided Merganser has been recorded in 2 countries.

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生息あり Not recorded

countries highlighted

🇹🇼 Taiwan 🇳🇴 Norway

External Databases

よくある質問

What does the Scaly-sided Merganser eat?

Dives for fish in fast-flowing East Asian rivers. Endangered; highly piscivorous with serrated bill adapted for catching slippery fish.

Where does the Scaly-sided Merganser live?

Breeds in southern Russia, northern China, and the Russian Far East. Winters in southern China and Korea. Found on fast-flowing forested rivers.

Is the Scaly-sided Merganser endangered?

The Scaly-sided Merganser has a conservation status of Endangered.

How does the Scaly-sided Merganser nest?

Nest type: CV,O. Incubation: 31-35 days. Fledging: 56 days.

What does the Scaly-sided Merganser sound like?

Male gives a quiet, low grunting call; female produces a guttural, croaking series. Endangered; calls are poorly known; similar to Red-breasted Merganser but quieter in Manchurian forest rivers.

How big is the Scaly-sided Merganser?

The Scaly-sided Merganser has a wingspan of 51.2 cm, weight of 1145.8 g.

What order and family does the Scaly-sided Merganser belong to?

The Scaly-sided Merganser (Mergus squamatus) belongs to the order Anseriformes and the family Anatidae.