Campbell Teal vs African Black Duck
Anas nesiotis 비교 대상 Anas sparsa
Side-by-Side Comparison
| 속성 | Campbell Teal | African Black Duck |
|---|---|---|
| 학명 | Anas nesiotis | Anas sparsa |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Vulnerable | Least Concern |
| 체장 | — | — |
| 날개 폭 | 24.4 cm (9.6 in) | 49.5 cm (19.5 in) |
| 체중 | 358.75 g (12.65 oz) | 996.8333333333334 g (35.16 oz) |
| 식성 | Eats molluscs, crustaceans, and aquatic invertebrates in coastal and freshwater habitats; diet varies with season. | Eats molluscs, crustaceans, and aquatic invertebrates; dives in coastal and freshwater habitats; diet heavier in … |
| 산란 수 | 5-6 | 4-9 |
| Population Trend | — | — |
Habitat Comparison
Campbell Teal
Restricted to Campbell Island and Dent Island in the subantarctic New Zealand group. Dense tussock grassland, rocky shores, and freshwater streams. Nocturnal or crepuscular. Highly sedentary.
African Black Duck
Fast-flowing rocky rivers and streams, mountain gorges, and waterfalls from sea level to 4,000 m across sub-Saharan Africa from Ethiopia and Kenya south to the Cape. Requires clear turbulent water with boulders.
Song & Call Comparison
Campbell Teal
Female produces a very soft quacking note; male gives a faint squeak. Near-silent; rarely vocalizes; the reduced call apparatus mirrors the species' severely limited wingspan and near-flightlessness.
African Black Duck
Produces a harsh, resonant quacking call; alarm is a loud, emphatic quack repeated rapidly. Both sexes call with strong quacking; pairs duet with synchronized calls along African rivers.
Geographic Range & Migration
Campbell Teal
Breeds in sub-Arctic freshwater lakes of Canada; winters along the Pacific coast from Alaska to Baja California.
African Black Duck
Resident across South and Southeast Asia, from India to southern China and the Philippines. Non-migratory in most of its range.
보전 상태
Campbell Teal
African Black Duck
How to Tell Them Apart
Campbell Teal
Very dark brown plumage; males have iridescent green head gloss and white eye-ring. Females dark brown with white eye-ring. Flightless; tiny vestigial wings. Recovered from near-extinction on Campbell Island, New …
African Black Duck
Dark blackish-brown plumage with bold white spots on back and scapulars. Iridescent blue-green speculum with white borders. Head dark with pale spots. Bill and legs dark gray. Sexes similar. Fast-flowing …
About These Birds
Campbell Teal
캠벨 오리는 뉴질랜드 캠벨 섬에 서식하는 극히 작은 개체군을 가진 오리입니다. 짧은 날개와 갈색 깃털이 특징이며, 박멸 사업을 통해 섬에서 쥐가 제거된 후 개체 수가 회복 중입니다.
African Black Duck
아프리카 검정 오리는 사하라 이남 아프리카의 산간 하천과 개울에 서식하는 중간 크기의 오리입니다. 어두운 갈색 깃털과 흰색 반점이 특징이며, 빠르게 흐르는 물에 적응되어 있습니다.