Swallow-tailed Gull vs Aleutian Tern
Creagrus furcatus comparado con Onychoprion aleuticus
Side-by-Side Comparison
| Atributo | Swallow-tailed Gull | Aleutian Tern |
|---|---|---|
| Nombre científico | Creagrus furcatus | Onychoprion aleuticus |
| Orden | Charadriiformes | Charadriiformes |
| Familia | Laridae | Laridae |
| Estado de conservación | Least Concern | Vulnerable |
| Longitud | — | — |
| Envergadura | 81,8 cm (32.2 in) | 52,4 cm (20.6 in) |
| Peso | 695,0 g (24.52 oz) | 104,88 g (3.70 oz) |
| Dieta | -- | -- |
| Tamaño de la puesta | 1 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Swallow-tailed Gull only
Ninguno
Aleutian Tern only
Estado de conservación
Least Concern
Swallow-tailed Gull
Vulnerable
Aleutian Tern
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.
Aleutian Tern
Aleutian Tern, 32–34 cm, breeds colonially in Alaska and Russian Far East, wintering in Southeast Asian waters — one of the most poorly tracked migrations among seabirds. Dark grey above, white below, black cap with white forehead. Piscivore; dives for small fish. Near Threatened.