Mallard vs Australian Shelduck
Anas platyrhynchos 비교 대상 Tadorna tadornoides
Side-by-Side Comparison
| 속성 | Mallard | Australian Shelduck |
|---|---|---|
| 학명 | Anas platyrhynchos | Tadorna tadornoides |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | 58.0 cm (22.8 in) | — |
| 날개 폭 | 90.0 cm (35.4 in) | 70.7 cm (27.8 in) |
| 체중 | 1100.0 g (38.80 oz) | 1424.5 g (50.25 oz) |
| 식성 | Omnivorous — aquatic plants, seeds, insects, crustaceans, and mollusks. Feeds by dabbling, upending, and grazing … | Dabbles for aquatic invertebrates, seeds, and plant material in spring; forages in shallow ponds; diet … |
| 산란 수 | 4-18 | 5-19 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Mallard
Nearly any wetland habitat including lakes, rivers, ponds, marshes, estuaries, and urban park ponds.
Australian Shelduck
Inland salt lakes, ephemeral lakes, estuaries, coastal bays, and agricultural dams in southern Australia from Queensland west to Western Australia. Nests in burrows, hollow logs, and tree cavities.
Song & Call Comparison
Mallard
Female gives the classic 'quack-quack-quack', descending in pitch. Male utters soft nasal 'raeb-raeb'. Both give a high 'gag-gag-gag' when alarmed or taking flight.
Australian Shelduck
Male gives a whistling 'zzzeet'; female gives a loud, deep cackling 'uk-uk-uk'. Loud, far-carrying calls from Australian wetlands. Considered one of the noisier shelducks.
Geographic Range & Migration
Mallard
Native across the Northern Hemisphere in North America, Europe, and Asia. Introduced to Australia and New Zealand.
Australian Shelduck
Breeds across the Palearctic from Iceland and western Europe east to Siberia; winters in Africa, South Asia, and Southeast Asia.
보전 상태
Mallard
Australian Shelduck
How to Tell Them Apart
Mallard
Breeding males have an iridescent green head, white neck ring, chestnut breast, and grey body. Females are mottled brown. Both sexes show a blue speculum bordered by white.
Broad, flat bill — yellow-green in males, orange-brown in females
Australian Shelduck
Males dark chestnut with black head showing green gloss; white neck collar. White inner wing with iridescent green speculum. Females have white eye-ring and white facial area. Chestnut breast; black …
About These Birds
Mallard
가장 잘 알려진 야생 오리로 체장 50–65cm이며, 수컷은 광택 있는 녹색 머리와 노란 부리, 자주빛 갈색 가슴, 흰색 목 고리를 갖는다. 북반구 전역과 호주에 귀화하여 온대 내지 아열대 습지, 호수, 강, 도시 공원에 서식한다. 잡식성으로 식물, 곤충, 작은 어류를 먹는다. 관심 필요 종이다.
Australian Shelduck
A large shelduck with a dark bottle-green head, chestnut breast band in females, and dark body with white wing coverts. Common in southern Australia. One of Australia's largest ducks. Gregarious and conspicuous; forms flocks on inland salt lakes and coastal bays.