Black-tailed Gull vs Ross's Gull
Larus crassirostris verglichen mit Rhodostethia rosea
Side-by-Side Comparison
| Merkmal | Black-tailed Gull | Ross's Gull |
|---|---|---|
| Wissenschaftlicher Name | Larus crassirostris | Rhodostethia rosea |
| Ordnung | Charadriiformes | Charadriiformes |
| Familie | Laridae | Laridae |
| Erhaltungsstatus | Least Concern | Least Concern |
| Länge | — | — |
| Flügelspannweite | 72,8 cm (28.7 in) | 50,2 cm (19.8 in) |
| Gewicht | 675,0 g (23.81 oz) | 185,0 g (6.53 oz) |
| Ernährung | -- | -- |
| Gelegegröße | 2-3 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Erhaltungsstatus
Least Concern
Black-tailed Gull
Least Concern
Ross's Gull
About These Birds
Black-tailed Gull
Black-tailed Gull, 44–48 cm, is common on East Asian coasts from Russia to China, Japan, and Korea. Grey mantle, white body, yellow bill with red spot and black subterminal band, yellow legs. Omnivore; very vocal, known as the 'cat gull' for its mewing calls. Migratory; winters south to Vietnam.
Ross's Gull
Ross's Gull, 29–32 cm, is a delicate Arctic gull breeding in Siberian tundra, with its winter range largely unknown — possibly far out in the pack ice. Rosy flush to underparts in breeding plumage; wedge-shaped tail; black neck ring. Feeds on invertebrates and small fish along ice edges.