Arctic Tern vs Barn Owl
Sterna paradisaea 비교 대상 Tyto alba
Side-by-Side Comparison
| 속성 | Arctic Tern | Barn Owl |
|---|---|---|
| 학명 | Sterna paradisaea | Tyto alba |
| 목 | Charadriiformes | Strigiformes |
| 과 | Laridae | Tytonidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | 34.0 cm (13.4 in) | 35.0 cm (13.8 in) |
| 날개 폭 | 80.0 cm (31.5 in) | 90.0 cm (35.4 in) |
| 체중 | 110.0 g (3.88 oz) | 350.0 g (12.35 oz) |
| 식성 | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. | Almost exclusively small mammals, especially voles and mice. Hunts using extraordinary hearing to locate prey … |
| 산란 수 | 2-3 | 2-16 |
| 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.
Barn Owl
Open farmland, grasslands, and marshes. Nests in barns, church steeples, tree cavities, and purpose-built nest boxes.
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.
Barn Owl
An eerie, drawn-out rasping shriek 'shreeeeee' — not a hoot. Also gives hissing, snoring, and bill-snapping when disturbed. Chicks call with a persistent rasping hunger call.
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.
Barn Owl
The most widespread owl and one of the most widespread land birds, found on every continent except Antarctica.
보전 상태
Arctic Tern
Barn Owl
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
Barn Owl
Pale golden-buff upperparts with delicate grey mottling. Pure white heart-shaped face and white to pale buff underparts. Ghostly white appearance in flight.
Pale pinkish hooked bill nearly concealed by the facial disc
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.
Barn Owl
헛간올빼미는 어떤 올빼미보다 가장 비대칭적인 귀를 가지고 있어, 동물계에서 가장 정밀한 청각 위치 파악 능력을 지닙니다. 소리만으로 완전한 어둠 속에서 먹이를 잡을 수 있습니다. 헛간올빼미의 독특한 하트 모양 얼굴은 포물면 접시처럼 작용하여 소리를 어긋난 귀로 집중시킵니다.