Aleutian Tern vs Sandwich Tern
Onychoprion aleuticus comparado con Thalasseus sandvicensis
Side-by-Side Comparison
| Atributo | Aleutian Tern | Sandwich Tern |
|---|---|---|
| Nombre científico | Onychoprion aleuticus | Thalasseus sandvicensis |
| Orden | Charadriiformes | Charadriiformes |
| Familia | Laridae | Laridae |
| Estado de conservación | Vulnerable | Least Concern |
| Longitud | — | — |
| Envergadura | 52,4 cm (20.6 in) | 57,7 cm (22.7 in) |
| Peso | 104,88 g (3.70 oz) | 223,5 g (7.88 oz) |
| Dieta | -- | -- |
| Tamaño de la puesta | 1-4 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Estado de conservación
Vulnerable
Aleutian Tern
Least Concern
Sandwich Tern
About These Birds
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.
Sandwich Tern
Sandwich Tern, 36–41 cm, is a widespread coastal tern breeding from Western Europe and the Caspian Sea to the Caribbean. Black cap with shaggy crest, slender black bill with a yellow tip. Plunge-dives forcefully for sand eels and sprats. Strongly migratory; European birds winter to West Africa.