Torrent Duck

について

トレンツアイサはアンデス山脈の急流河川に生息する特殊なカモです。水流の速い清澄な渓流に適応しており、流れの中の岩の上を歩き回ります。魚、水生昆虫、甲殻類を捕食します。厳しい流れに適応した独特の生態を持ちます。

Physical Description

Measurement	Value	Imperial
翼開長	32.7 cm	12.9 in
体重	366.875 g	12.94 oz

識別

羽毛

Striking sexual dimorphism. Males have white head with black stripes and red bill; dark back with rufous breast. Females gray above with rufous-cinnamon underparts. Stiff tail; specialized for fast-running rivers.

Habitat & Range

Fast-flowing clear Andean mountain rivers and torrents at 1,500–4,500 m from Venezuela south through Colombia, Ecuador, Peru, Bolivia, and Chile to Tierra del Fuego. Requires bouldered well-oxygenated rapids.

分布域

Breeds in the northern prairie pothole region; winters along both coasts of the United States and south to Mexico.

Diet & Feeding

Filter-feeds on aquatic invertebrates and seeds; dabbles in shallow wetlands; diet more plant-based in winter non-breeding period.

保全状況

Least Concern

IUCN Red List

行動と繁殖

営巣

Nest type: CV,O. Incubation: 43-44 days.

一腹卵数

3-4

鳴き声

さえずり

A sharp, staccato 'pit' or 'wit' call. Males give a loud, ringing whistle. The Torrent Duck is a fast-flowing Andean river specialist; calls carry over powerful rapids.

分類学

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

Distribution

Torrent Duck has been recorded in 4 countries.

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生息あり Not recorded

countries highlighted

🇳🇴 Norway 🇨🇴 Colombia 🇪🇨 Ecuador 🇻🇪 Venezuela

External Databases

よくある質問

What does the Torrent Duck eat?

Filter-feeds on aquatic invertebrates and seeds; dabbles in shallow wetlands; diet more plant-based in winter non-breeding period.

Where does the Torrent Duck live?

Fast-flowing clear Andean mountain rivers and torrents at 1,500–4,500 m from Venezuela south through Colombia, Ecuador, Peru, Bolivia, and Chile to Tierra del Fuego. Requires bouldered well-oxygenated rapids.

Is the Torrent Duck endangered?

The Torrent Duck has a conservation status of Least Concern.

How does the Torrent Duck nest?

Nest type: CV,O. Incubation: 43-44 days.

What does the Torrent Duck sound like?

A sharp, staccato 'pit' or 'wit' call. Males give a loud, ringing whistle. The Torrent Duck is a fast-flowing Andean river specialist; calls carry over powerful rapids.

How big is the Torrent Duck?

The Torrent Duck has a wingspan of 32.7 cm, weight of 366.875 g.

What order and family does the Torrent Duck belong to?

The Torrent Duck (Merganetta armata) belongs to the order Anseriformes and the family Anatidae.