Küstenseeschwalbe vs Swallow-tailed Gull
Sterna paradisaea verglichen mit Creagrus furcatus
Side-by-Side Comparison
| Merkmal | Küstenseeschwalbe | Swallow-tailed Gull |
|---|---|---|
| Wissenschaftlicher Name | Sterna paradisaea | Creagrus furcatus |
| Ordnung | Charadriiformes | Charadriiformes |
| Familie | Laridae | Laridae |
| Erhaltungsstatus | Least Concern | Least Concern |
| Länge | 34,0 cm (13.4 in) | — |
| Flügelspannweite | 80,0 cm (31.5 in) | 81,8 cm (32.2 in) |
| Gewicht | 110,0 g (3.88 oz) | 695,0 g (24.52 oz) |
| Ernährung | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. | -- |
| Gelegegröße | 2-3 | 1 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Gemeinsame Lebensräume
Küstenseeschwalbe only
Swallow-tailed Gull only
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Küstenseeschwalbe
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
Küstenseeschwalbe
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.
Swallow-tailed Gull
Geographic Range & Migration
Küstenseeschwalbe
Breeds in the Arctic and sub-Arctic. Migrates to the Antarctic, experiencing two summers per year. Found on every ocean.
Swallow-tailed Gull
Erhaltungsstatus
Küstenseeschwalbe
Swallow-tailed Gull
How to Tell Them Apart
Küstenseeschwalbe
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
Swallow-tailed Gull
About These Birds
Küstenseeschwalbe
Die Küstenseeschwalbe hält den Rekord für die längste bekannte Wanderung im Tierreich und legt jährlich rund 70.000 km zwischen Arktis und Antarktis und zurück zurück. Über ihre rund 30 Lebensjahre hinweg fliegt sie damit rechnerisch das Äquivalent von drei Rundreisen zum Mond. Dieser bemerkenswerte Vogel erlebt mehr Tageslicht als jedes andere Lebewesen der Erde.
Swallow-tailed Gull
Swallow-tailed Gull, 55–60 cm, is the world's only fully nocturnal gull, breeding on the Galápagos Islands and roosting on the Humboldt Current. Distinctive red orbital ring, black-and-white head, deeply forked tail. Feeds at sea at night on squid and fish attracted to surface by bioluminescence.