Arctic Tern vs Barn Owl
Sterna paradisaea so với Tyto alba
Side-by-Side Comparison
| Thuộc Tính | Arctic Tern | Barn Owl |
|---|---|---|
| Tên Khoa Học | Sterna paradisaea | Tyto alba |
| Bộ | Charadriiformes | Strigiformes |
| Họ | Laridae | Tytonidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | 34,0 cm (13.4 in) | 35,0 cm (13.8 in) |
| Chiều Dài Sải Cánh | 80,0 cm (31.5 in) | 90,0 cm (35.4 in) |
| Khối Lượng | 110,0 g (3.88 oz) | 350,0 g (12.35 oz) |
| Chế Độ Ăn | 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 … |
| Số Trứng | 2-3 | 2-16 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Môi Trường Sống Chung
Arctic Tern only
Không
Barn Owl only
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.
Tình Trạng Bảo Tồn
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
The Arctic tern holds the record for the longest known migration of any animal, traveling roughly 70,000 km annually from Arctic to Antarctic and back. Over its 30-year lifespan, it may fly the equivalent of three round trips to the Moon. This remarkable bird experiences more daylight than any other creature on Earth.
Barn Owl
The barn owl has the most asymmetrical ears of any owl, giving it the finest auditory localization ability in the animal kingdom. It can catch prey in complete darkness using sound alone. The barn owl's distinctive heart-shaped face acts as a parabolic dish, funneling sound to its offset ears.