Aleutian Tern vs Yellow-billed Tern
Onychoprion aleuticus compared with Sternula superciliaris
Side-by-Side Comparison
| Attribute | Aleutian Tern | Yellow-billed Tern |
|---|---|---|
| Scientific Name | Onychoprion aleuticus | Sternula superciliaris |
| Order | Charadriiformes | Charadriiformes |
| Family | Laridae | Laridae |
| Conservation Status | Vulnerable | Least Concern |
| Length | — | — |
| Wingspan | 52.4 cm (20.6 in) | 33.8 cm (13.3 in) |
| Weight | 104.88 g (3.70 oz) | 47.800000000000004 g (1.69 oz) |
| Diet | -- | -- |
| Clutch Size | 1-4 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Vulnerable
Aleutian Tern
Least Concern
Yellow-billed 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.
Yellow-billed Tern
Yellow-billed Tern, 22–24 cm, is a freshwater tern of the Amazon and Orinoco river systems in South America. Yellow bill and legs, grey back, black cap. Piscivore; hovers over rivers and lakes, diving for small fish. Resident year-round along major tropical waterways.