Arctic Tern vs Atlantic White Tern
Sterna paradisaea comparado com Gygis alba
Side-by-Side Comparison
| Atributo | Arctic Tern | Atlantic White Tern |
|---|---|---|
| Nome científico | Sterna paradisaea | Gygis alba |
| Ordem | Charadriiformes | Charadriiformes |
| Família | Laridae | Laridae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | 34,0 cm (13.4 in) | — |
| Envergadura | 80,0 cm (31.5 in) | 50,4 cm (19.8 in) |
| Peso | 110,0 g (3.88 oz) | 138,0 g (4.87 oz) |
| Dieta | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. | -- |
| Tamanho da postura | 2-3 | 1 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Habitats partilhados
Arctic Tern only
Atlantic White Tern only
Nenhum
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.
Atlantic White 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.
Atlantic White Tern
Estado de conservação
Arctic Tern
Atlantic White 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
Atlantic White 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.
Atlantic White Tern
Atlantic White Tern: 28–33 cm, wingspan 76–87 cm, ethereally white seabird with blue-grey bill, blue orbital ring, and large dark eyes. Breeds on tropical Atlantic islands including Ascension and Saint Helena; related species widespread across the Indo-Pacific. Nests on bare branches with no nest material. Feeds on small fish near the surface.