Arctic Tern vs Emu
Sterna paradisaea 비교 대상 Dromaius novaehollandiae
Side-by-Side Comparison
| 속성 | Arctic Tern | Emu |
|---|---|---|
| 학명 | Sterna paradisaea | Dromaius novaehollandiae |
| 목 | Charadriiformes | Casuariiformes |
| 과 | Laridae | Dromaiidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | 34.0 cm (13.4 in) | 175.0 cm (68.9 in) |
| 날개 폭 | 80.0 cm (31.5 in) | 20.0 cm (7.9 in) |
| 체중 | 110.0 g (3.88 oz) | 45000.0 g (1587.33 oz) |
| 식성 | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. | Plants, seeds, fruits, flowers, and insects. Swallows large stones and charcoal to grind food in … |
| 산란 수 | 2-3 | 5-24 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Arctic Tern
Breeds on coastal and tundra habitats. Spends most of its life at sea over the open ocean. Nests in colonies on beaches and rocky shores.
Emu
Open grasslands, savanna woodlands, scrublands, and semi-arid plains across Australia. Avoids dense forest and true desert.
Song & Call Comparison
Arctic Tern
A sharp, grating 'kree-yah' alarm call. Also gives 'kik-kik-kik' near the nest. Highly aggressive vocally during the Arctic breeding season. Calls are harsh and insistent.
Emu
Deep, resonant booming grunt 'e-moo', often repeated 3 times. Females give a deep drumming call produced by an inflatable throat pouch. Generally low-pitched and far-carrying.
Geographic Range & Migration
Arctic Tern
Breeds in the Arctic and sub-Arctic. Migrates to the Antarctic, experiencing two summers per year. Found on every ocean.
Emu
Throughout mainland Australia. Absent from Tasmania, where the Tasmanian emu was driven to extinction by 1850.
보전 상태
Arctic Tern
Emu
How to Tell Them Apart
Arctic Tern
Pale grey upperparts, white underparts with a black cap. Blood-red bill and short red legs. Deeply forked tail streamers. Winter adults lose the full black cap.
Slender, pointed, bright red bill
Emu
Shaggy grey-brown plumage with double-shafted feathers giving a loose, hair-like appearance. Bare blue skin on the face and neck.
Broad, flat, dark grey bill
About These Birds
Arctic Tern
북극제비갈매기는 모든 동물 중 가장 긴 이동 기록을 보유하고 있어, 매년 북극에서 남극까지 약 7만 km를 왕복합니다. 약 30년의 수명 동안 달을 세 번 왕복하는 거리를 날아다닙니다. 지구상 어떤 생물보다 많은 일광을 경험하는 놀라운 새입니다.
Emu
에뮤는 두 번째로 키가 큰 현존 조류이자 호주 최대 조류이다. 날지 못하지만 시속 50km로 달릴 수 있으며 강한 다리로 포식자를 방어한다. 수컷이 알을 품고 새끼를 기른다.