Aleutian Tern vs West African Crested Tern
Onychoprion aleuticus compared with Thalasseus albididorsalis
Side-by-Side Comparison
| Attribute | Aleutian Tern | West African Crested Tern |
|---|---|---|
| Scientific Name | Onychoprion aleuticus | Thalasseus albididorsalis |
| Order | Charadriiformes | Charadriiformes |
| Family | Laridae | Laridae |
| Conservation Status | Vulnerable | Not Evaluated |
| Length | — | — |
| Wingspan | 52.4 cm (20.6 in) | — |
| Weight | 104.88 g (3.70 oz) | 380.0 g (13.40 oz) |
| Diet | -- | -- |
| Clutch Size | 1-4 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Shared Habitats
Aleutian Tern only
West African Crested Tern only
None
Conservation Status
Vulnerable
Aleutian Tern
Not Evaluated
West African Crested 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.
West African Crested Tern
West African Crested Tern, 42–45 cm, breeds on Atlantic islands from Mauritania to Angola. Pale grey back, orange bill, black crest. Piscivore; forages along the rich upwelling zone off West Africa. Recently split from Lesser Crested Tern. Coastal and offshore forager in tropical waters.