Arctic Tern vs Whiskered Tern
Sterna paradisaea so với Chlidonias hybrida
Side-by-Side Comparison
| Thuộc Tính | Arctic Tern | Whiskered Tern |
|---|---|---|
| Tên Khoa Học | Sterna paradisaea | Chlidonias hybrida |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Laridae | Laridae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | 34,0 cm (13.4 in) | — |
| Chiều Dài Sải Cánh | 80,0 cm (31.5 in) | 46,4 cm (18.3 in) |
| Khối Lượng | 110,0 g (3.88 oz) | 84,5 g (2.98 oz) |
| Chế Độ Ăn | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. | -- |
| Số Trứng | 2-3 | 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
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.
Whiskered Tern
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.
Whiskered Tern
Tình Trạng Bảo Tồn
Arctic Tern
Whiskered Tern
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
Whiskered Tern
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.
Whiskered Tern
Whiskered Tern, 23–25 cm, is a marsh tern breeding from Europe and Africa to Asia and Australia. Breeding plumage: dark grey below, black cap, red bill. Forages over freshwater marshes, dipping for insects and small fish. Short-distance migrant; winters in sub-Saharan Africa and South Asia.