Arctic Tern vs Pallas's Gull
Sterna paradisaea เปรียบเทียบกับ Larus ichthyaetus
Side-by-Side Comparison
| คุณสมบัติ | Arctic Tern | Pallas's Gull |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Sterna paradisaea | Larus ichthyaetus |
| อันดับ | Charadriiformes | Charadriiformes |
| วงศ์ตระกูล | Laridae | Laridae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | 34.0 cm (13.4 in) | — |
| กว้างปีก | 80.0 cm (31.5 in) | 94.2 cm (37.1 in) |
| น้ำหนัก | 110.0 g (3.88 oz) | 1413.3333333333333 g (49.85 oz) |
| อาหาร | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. | -- |
| จำนวนไข่ | 2-3 | 1-3 |
| 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.
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.
Pallas's Gull
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.
Pallas's Gull
สถานะการอนุรักษ์
Arctic Tern
Pallas's Gull
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
Pallas's Gull
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.
Pallas's Gull
Pallas's Gull, 57–61 cm, is the world's largest hooded gull, breeding on Central Asian lakes and wintering in the Indian Ocean. Massive yellow bill with orange tip, black hood with white eye-crescents. Piscivore; plunge-dives and pirates food from other seabirds. Partially migratory.