Black-tailed Gull vs Red-legged Kittiwake
Larus crassirostris verglichen mit Rissa brevirostris
Side-by-Side Comparison
| Merkmal | Black-tailed Gull | Red-legged Kittiwake |
|---|---|---|
| Wissenschaftlicher Name | Larus crassirostris | Rissa brevirostris |
| Ordnung | Charadriiformes | Charadriiformes |
| Familie | Laridae | Laridae |
| Erhaltungsstatus | Least Concern | Vulnerable |
| Länge | — | — |
| Flügelspannweite | 72,8 cm (28.7 in) | 60,0 cm (23.6 in) |
| Gewicht | 675,0 g (23.81 oz) | 401,6666666666667 g (14.17 oz) |
| Ernährung | -- | -- |
| Gelegegröße | 2-3 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Erhaltungsstatus
Least Concern
Black-tailed Gull
Vulnerable
Red-legged Kittiwake
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.
Red-legged Kittiwake
Red-legged Kittiwake, 35–39 cm, has a very restricted range on only four Aleutian and Pribilof Island colonies, with a world population under 200,000. Resembles Black-legged Kittiwake but with bright red legs, darker upperparts, and white underwing tips. Pelagic piscivore; Vulnerable and declining.