Atlantic White Tern vs Aleutian Tern
Gygis alba compared with Onychoprion aleuticus
Side-by-Side Comparison
| Attribute | Atlantic White Tern | Aleutian Tern |
|---|---|---|
| Scientific Name | Gygis alba | Onychoprion aleuticus |
| Order | Charadriiformes | Charadriiformes |
| Family | Laridae | Laridae |
| Conservation Status | Least Concern | Vulnerable |
| Length | — | — |
| Wingspan | 50.4 cm (19.8 in) | 52.4 cm (20.6 in) |
| Weight | 138.0 g (4.87 oz) | 104.88 g (3.70 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Atlantic White Tern
Vulnerable
Aleutian Tern
About These Birds
Atlantic White Tern
Atlantic White Tern: 28–33 cm, wingspan 76–87 cm, ethereally white seabird with blue-grey bill, blue orbital ring, and large dark eyes. Breeds on tropical Atlantic islands including Ascension and Saint Helena; related species widespread across the Indo-Pacific. Nests on bare branches with no nest material. Feeds on small fish near the surface.
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.