Küstenseeschwalbe vs Black-billed Gull
Sterna paradisaea verglichen mit Larus bulleri
Side-by-Side Comparison
| Merkmal | Küstenseeschwalbe | Black-billed Gull |
|---|---|---|
| Wissenschaftlicher Name | Sterna paradisaea | Larus bulleri |
| Ordnung | Charadriiformes | Charadriiformes |
| Familie | Laridae | Laridae |
| Erhaltungsstatus | Least Concern | Near Threatened |
| Länge | 34,0 cm (13.4 in) | — |
| Flügelspannweite | 80,0 cm (31.5 in) | 57,5 cm (22.6 in) |
| Gewicht | 110,0 g (3.88 oz) | 216,83333333333334 g (7.65 oz) |
| Ernährung | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. | -- |
| Gelegegröße | 2-3 | 1-3 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Gemeinsame Lebensräume
Küstenseeschwalbe only
Black-billed 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.
Black-billed 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.
Black-billed Gull
Erhaltungsstatus
Küstenseeschwalbe
Black-billed 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
Black-billed 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.
Black-billed Gull
Black-billed Gull, 35–38 cm, is endemic to New Zealand, breeding on South Island braided riverbeds. All-white plumage with a slender black bill and black-tipped wings. Endangered; river modification and mammal predation depress breeding success. Insectivore and piscivore in river and coastal habitats.