Swallow-tailed Gull vs Black-tailed Gull
Creagrus furcatus comparado con Larus crassirostris
Side-by-Side Comparison
| Atributo | Swallow-tailed Gull | Black-tailed Gull |
|---|---|---|
| Nombre científico | Creagrus furcatus | Larus crassirostris |
| Orden | Charadriiformes | Charadriiformes |
| Familia | Laridae | Laridae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 81,8 cm (32.2 in) | 72,8 cm (28.7 in) |
| Peso | 695,0 g (24.52 oz) | 675,0 g (23.81 oz) |
| Dieta | -- | -- |
| Tamaño de la puesta | 1 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
Estado de conservación
Least Concern
Swallow-tailed Gull
Least Concern
Black-tailed Gull
About These Birds
Swallow-tailed Gull
Gaviota tijereta (Creagrus furcatus) — La única gaviota del mundo de hábitos plenamente nocturnos. Cola profundamente ahorquillada. Nidifica en las Islas Galápagos y en Malpelo. En el mar, caza cefalópodos y peces luminiscentes durante la noche.
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.