Atlantic White Tern vs Black-headed Gull
Gygis alba verglichen mit Larus ridibundus
Side-by-Side Comparison
| Merkmal | Atlantic White Tern | Black-headed Gull |
|---|---|---|
| Wissenschaftlicher Name | Gygis alba | Larus ridibundus |
| Ordnung | Charadriiformes | Charadriiformes |
| Familie | Laridae | Laridae |
| Erhaltungsstatus | Least Concern | Least Concern |
| Länge | — | — |
| Flügelspannweite | 50,4 cm (19.8 in) | 58,2 cm (22.9 in) |
| Gewicht | 138,0 g (4.87 oz) | 261,0 g (9.21 oz) |
| Ernährung | -- | -- |
| Gelegegröße | 1 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Gemeinsame Lebensräume
Atlantic White Tern only
-
Black-headed Gull only
Erhaltungsstatus
Least Concern
Atlantic White Tern
Least Concern
Black-headed Gull
About These Birds
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.
Black-headed Gull
Black-headed Gull, 38–44 cm, is one of Europe's commonest gulls, breeding across the Palearctic on wetlands and coasts. Chocolate-brown (not black) hood in summer, lost in winter leaving dark ear-spot. Omnivore; follows ploughs, scavenges in cities, dips for invertebrates. Migratory.