Andean Gull vs Aleutian Tern
Larus serranus comparado con Onychoprion aleuticus
Side-by-Side Comparison
| Atributo | Andean Gull | Aleutian Tern |
|---|---|---|
| Nombre científico | Larus serranus | Onychoprion aleuticus |
| Orden | Charadriiformes | Charadriiformes |
| Familia | Laridae | Laridae |
| Estado de conservación | Least Concern | Vulnerable |
| Longitud | — | — |
| Envergadura | 70,6 cm (27.8 in) | 52,4 cm (20.6 in) |
| Peso | 478,0 g (16.86 oz) | 104,88 g (3.70 oz) |
| Dieta | -- | -- |
| Tamaño de la puesta | 1-4 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Estado de conservación
Least Concern
Andean Gull
Vulnerable
Aleutian Tern
About These Birds
Andean Gull
Andean Gull, 45–48 cm, breeds at high-altitude Andean lakes from Colombia to Argentina, typically above 3000 m. Black hood in breeding plumage; white below with grey mantle. Largely insectivore, following cattle or foraging at lake edges. Partial altitudinal migrant descending to Pacific and Atlantic coasts in winter.
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.