Grey Teal vs Mandarin Duck
Anas gracilis 比較対象 Aix galericulata
Side-by-Side Comparison
| 属性 | Grey Teal | Mandarin Duck |
|---|---|---|
| 学名 | Anas gracilis | Aix galericulata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | 44.0 cm (17.3 in) |
| 翼開長 | 38.4 cm (15.1 in) | 70.0 cm (27.6 in) |
| 体重 | 504.25 g (17.79 oz) | 570.0 g (20.11 oz) |
| 食性 | Dives for molluscs, crustaceans, and aquatic invertebrates in shallow coastal and freshwater habitats; diet dominated … | Seeds, acorns, grains, aquatic plants, insects, snails, and small fish. Forages by dabbling, walking, and … |
| 一腹卵数 | 7-8 | 7-14 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Grey Teal
Freshwater and saline wetlands across Australia and New Zealand, including temporary pans, lakes, rivers, and estuaries. Highly nomadic in Australia following unpredictable rainfall. Less nomadic in New Zealand.
Mandarin Duck
Wooded lakes, rivers, and ponds surrounded by dense forest. Unlike most ducks, regularly perches in trees and nests in tree cavities.
Song & Call Comparison
Grey Teal
Female gives a high, nasal descending quacking series; male produces a soft, piping whistle. The high-pitched quacking call is distinctive; flocks create a musical chattering on Australian wetlands.
Mandarin Duck
Male gives a low whistled 'hib' or 'weep'. Female utters a soft quacking 'kek'. Generally quiet and secretive. No loud territorial song; vocalizations subtle and brief.
Geographic Range & Migration
Grey Teal
Breeds across northern North America in boreal and sub-Arctic zones; winters on both coasts and inland waters of the US.
Mandarin Duck
Native to East Asia including eastern Russia, China, Japan, and Korea. Feral populations established in Britain and western Europe.
保全状況
Grey Teal
Mandarin Duck
How to Tell Them Apart
Grey Teal
Pale gray-brown body finely spotted and scaled dark. Head pale gray-buff with fine dark spots. Red eye. White throat. Iridescent green speculum with white front border. Gray bill; gray legs. …
Mandarin Duck
Breeding males have an elaborate pattern of orange, green, white, and purple with distinctive orange sail feathers on the back. Females are grey-brown with a white eye-ring and stripe.
Small red bill in breeding males, pinkish in females
About These Birds
Grey Teal
グレーティールはオーストラリアとニュージーランドに分布する小型のカモです。全身が灰褐色の地味な外見ですが、飛翔時に翼の白い模様が目立ちます。一時的な水たまり、湿地、田んぼ、干ばつ後の内陸湖など様々な水域に適応しています。
Mandarin Duck
オシドリ。東アジア原産の美しいカモ。雄は鮮やかなオレンジ色の「帆羽」と複雑な羽毛模様が特徴的。体長41〜49cm。森林の池や川に生息し、樹洞に巣を作る。ドングリや水草を食べる。低危険種。