Brent Goose vs Trumpeter Swan
Branta bernicla 비교 대상 Cygnus buccinator
Side-by-Side Comparison
| 속성 | Brent Goose | Trumpeter Swan |
|---|---|---|
| 학명 | Branta bernicla | Cygnus buccinator |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 63.9 cm (25.2 in) | 125.1 cm (49.3 in) |
| 체중 | 1335.0 g (47.09 oz) | 9975.0 g (351.86 oz) |
| 식성 | Primarily herbivorous; grazes aquatic plants, grasses, and sedges; swans upend in shallow water for submerged … | Dabbles for seeds, invertebrates, and aquatic plants in shallow water; diet shifts between plant-rich and … |
| 산란 수 | 1-10 | 1-9 |
| Population Trend | — | — |
Habitat Comparison
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.
Trumpeter Swan
Large deep-water lakes, slow rivers, and wetland complexes in western and interior North America from Alaska and Canada south to Oregon. Winters on ice-free rivers and coastal estuaries.
Song & Call Comparison
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.
Trumpeter Swan
A deep, resonant, French-horn-like bugling 'oh-OH-oh'. The most musical of North American swans. Pairs sing in duet. Very different from the thin whistle of smaller swans.
Geographic Range & Migration
Brent Goose
Breeds across boreal and subarctic Canada and Alaska; winters in the southern United States, Mexico, and Central America.
Trumpeter Swan
Breeds in Alaska and northern Canada; winters along the Pacific and Atlantic coasts from the southern United States to Mexico.
보전 상태
Brent Goose
Trumpeter Swan
How to Tell Them Apart
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.
Trumpeter Swan
Entirely snow-white plumage in adults. All-black bill lacking yellow patch. Large size; heaviest North American bird. Neck held straight. Juveniles gray-brown, becoming white by second year. Sexes similar.
About These Birds
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.
Trumpeter Swan
북아메리카 최대 토착 물새이자 가장 무거운 비조 중 하나로, 흰색 깃털, 긴 목, 전체 검은 부리를 가진다. 울림이 좋은 나팔 소리 같은 울음으로 명명되었다. 20세기에 적극적인 보전 활동으로 거의 멸종 위기에서 회복되었다. 북부 습지에서 번식한다.