Brown Noddy vs Arctic Tern
Anous stolidus เปรียบเทียบกับ Sterna paradisaea
Side-by-Side Comparison
| คุณสมบัติ | Brown Noddy | Arctic Tern |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Anous stolidus | Sterna paradisaea |
| อันดับ | Charadriiformes | Charadriiformes |
| วงศ์ตระกูล | Laridae | Laridae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | 34.0 cm (13.4 in) |
| กว้างปีก | 53.1 cm (20.9 in) | 80.0 cm (31.5 in) |
| น้ำหนัก | 184.66666666666666 g (6.51 oz) | 110.0 g (3.88 oz) |
| อาหาร | -- | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. |
| จำนวนไข่ | 1 | 2-3 |
| 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
Brown Noddy
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.
Geographic Range & Migration
Brown Noddy
Arctic Tern
Breeds in the Arctic and sub-Arctic. Migrates to the Antarctic, experiencing two summers per year. Found on every ocean.
สถานะการอนุรักษ์
Brown Noddy
Arctic Tern
How to Tell Them Apart
Brown Noddy
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
About These Birds
Brown Noddy
Brown Noddy: 38–45 cm, wingspan 75–86 cm, chocolate-brown tropical tern with a white cap fading to grey on the forehead and a wedge-shaped tail. Highly abundant colonial seabird nesting on oceanic islands and coral atolls throughout tropical and subtropical oceans. Plunge-dives for small fish and invertebrates. Long-lived. Partly migratory.
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.