Aleutian Tern vs Bridled Tern
Onychoprion aleuticus compared with Onychoprion anaethetus
Side-by-Side Comparison
| Attribute | Aleutian Tern | Bridled Tern |
|---|---|---|
| Scientific Name | Onychoprion aleuticus | Onychoprion anaethetus |
| Order | Charadriiformes | Charadriiformes |
| Family | Laridae | Laridae |
| Conservation Status | Vulnerable | Least Concern |
| Length | — | — |
| Wingspan | 52.4 cm (20.6 in) | 54.7 cm (21.5 in) |
| Weight | 104.88 g (3.70 oz) | 129.13333333333333 g (4.56 oz) |
| Diet | -- | -- |
| Clutch Size | 1-4 | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Vulnerable
Aleutian Tern
Least Concern
Bridled 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.
Bridled Tern
Bridled Tern, 30–32 cm, breeds on tropical islands across the Indo-Pacific and Atlantic. Dark brownish-black above with a white forehead stripe extending behind the eye — the diagnostic 'bridle'. Pelagic outside breeding; piscivore, takes fish and squid at the surface.