Lesser White-fronted Goose vs Wandering Whistling-duck
Anser erythropus 比較対象 Dendrocygna arcuata
Side-by-Side Comparison
| 属性 | Lesser White-fronted Goose | Wandering Whistling-duck |
|---|---|---|
| 学名 | Anser erythropus | Dendrocygna arcuata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Vulnerable | Least Concern |
| 体長 | — | — |
| 翼開長 | 73.8 cm (29.1 in) | 37.2 cm (14.6 in) |
| 体重 | 1912.5 g (67.46 oz) | 779.5 g (27.50 oz) |
| 食性 | -- | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … |
| 一腹卵数 | 2-8 | 6-15 |
| Population Trend | — | — |
Habitat Comparison
Lesser White-fronted Goose
Breeds on low-arctic and subarctic willow scrub and tundra across northern Eurasia. Winters on agricultural steppes and wetlands in Azerbaijan, Iran, Greece, and eastern Asia. Mixes with White-fronted Goose flocks.
Wandering Whistling-duck
Tropical freshwater marshes, flooded grasslands, swamps, and lake margins from the Philippines and Indonesia through Papua New Guinea to northern and eastern Australia. Nomadic following wet season flooding.
Song & Call Comparison
Lesser White-fronted Goose
A high-pitched, rapid 'yelp' — noticeably faster and higher than Greater White-fronted. VU status; its smaller size is reflected in higher-frequency calls.
Wandering Whistling-duck
A soft whistle 'whi-whi-whi' in flight. Less vocal than other whistling-ducks; flocks tend to be quieter. Given at dawn and dusk during flight to roosting or feeding areas.
Geographic Range & Migration
Lesser White-fronted Goose
Wandering Whistling-duck
Breeds in Arctic and subarctic regions; winters at sea around the Antarctic pack ice, one of the longest migrations known.
保全状況
Lesser White-fronted Goose
Wandering Whistling-duck
How to Tell Them Apart
Lesser White-fronted Goose
Similar to but smaller than Greater White-fronted Goose; more extensive white forehead reaching above eyes. Distinctive yellow eye-ring. Dark brown-gray body with black belly bars. Pink bill; orange legs.
Wandering Whistling-duck
Rich chestnut-brown head and neck; dark brown back. Flanks rufous with pale buff streaks and dark spots. Belly blackish. Long, dark pinkish legs. Upright posture typical of whistling-ducks. Sexes similar.
About These Birds
Lesser White-fronted Goose
カリガネはシベリアの北極ツンドラに繁殖し、東欧から中央アジアで越冬するガンです。マガンに似ますが小型で、白い額がより広いです。草地、農地、湿地で採食します。個体数が少ない絶滅危惧種で、日本には稀に飛来します。
Wandering Whistling-duck
ワンデリングウィスリングダックは東南アジアからオーストラリアにかけて分布するツリーダックです。栗色の羽毛と長い首が特徴で、群れで移動します。湿地、稲田、水草に覆われた湖に生息し、水草、種子、藻類を採食します。