Mottled Duck vs Brent Goose
Anas fulvigula 비교 대상 Branta bernicla
Side-by-Side Comparison
| 속성 | Mottled Duck | Brent Goose |
|---|---|---|
| 학명 | Anas fulvigula | Branta bernicla |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 48.9 cm (19.3 in) | 63.9 cm (25.2 in) |
| 체중 | 1027.5 g (36.24 oz) | 1335.0 g (47.09 oz) |
| 식성 | Dives for freshwater fish and aquatic invertebrates; saw-edged bill grips prey; diet strongly fish-dominated year-round. | Primarily herbivorous; grazes aquatic plants, grasses, and sedges; swans upend in shallow water for submerged … |
| 산란 수 | 9-13 | 1-10 |
| Population Trend | — | — |
Habitat Comparison
Mottled Duck
Coastal freshwater and brackish marshes, wet prairies, and gulf coast wetlands in Florida and along the Gulf of Mexico coast to Texas. Non-migratory year-round resident. Threatened by Mallard hybridization.
Brent Goose
Breeds on high-Arctic tundra; winters on estuaries, coastal mudflats, saltmarshes, and sea-grass beds along Atlantic and Pacific coastlines. One of the most strictly coastal wintering geese.
Song & Call Comparison
Mottled Duck
Female gives a loud, Mallard-like quacking series; male produces a soft, nasal note. Alarm call is a rapid, emphatic quacking burst; flocks generate a loud chorus on Gulf Coast marshes.
Brent Goose
A low, guttural 'rronk' or 'ronk-ronk' from flocks. Soft nasal calls in feeding groups. A subtle, understated call for a goose — less loud than most Anser geese.
Geographic Range & Migration
Mottled Duck
Breeds across sub-Arctic and boreal regions of Eurasia; winters in sub-Saharan Africa and South Asia.
Brent Goose
Breeds across boreal and subarctic Canada and Alaska; winters in the southern United States, Mexico, and Central America.
보전 상태
Mottled Duck
Brent Goose
How to Tell Them Apart
Mottled Duck
Rich mottled brown plumage with buff-edged feathers and pale buff head and throat. Dark crown and eye stripe. Iridescent blue speculum with white border. Yellow-orange bill. Sexes similar. Resembles non-breeding …
Brent Goose
Small; mostly black head, neck, and breast. Small white neck-patch on adults. Back dark brownish-gray; belly pale gray to white depending on subspecies. White undertail coverts. Sexes similar.
About These Birds
Mottled Duck
플로리다 오리 또는 모틀드 덕이라고도 불리는 이 종은 미국 남부 플로리다와 멕시코만 연안에 서식하는 중간 크기의 오리입니다. 말라드와 비슷하지만 뺨이 더 밝고 꼬리 깃털이 더 어둡습니다.
Brent Goose
검은 머리와 목, 작은 흰 목 반점, 연한 회색 배를 가진 작은 어두운 몸통의 기러기입니다. 고위도 북극 번식지와 온대 해안 월동지 사이를 이동합니다. 겨울에 잘피와 염습지 식생을 먹습니다. 세 아종이 배 색상이 다릅니다.