Common Gull-billed Tern vs Aleutian Tern
Gelochelidon nilotica compared with Onychoprion aleuticus
Side-by-Side Comparison
| Attribute | Common Gull-billed Tern | Aleutian Tern |
|---|---|---|
| Scientific Name | Gelochelidon nilotica | Onychoprion aleuticus |
| Order | Charadriiformes | Charadriiformes |
| Family | Laridae | Laridae |
| Conservation Status | Least Concern | Vulnerable |
| Length | — | — |
| Wingspan | 61.6 cm (24.3 in) | 52.4 cm (20.6 in) |
| Weight | 214.075 g (7.55 oz) | 104.88 g (3.70 oz) |
| Diet | -- | -- |
| Clutch Size | 1-3 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Shared Habitats
Common Gull-billed Tern only
None
Aleutian Tern only
None
Conservation Status
Least Concern
Common Gull-billed Tern
Vulnerable
Aleutian Tern
About These Birds
Common Gull-billed Tern
Common Gull-billed Tern, 35–38 cm, wingspan 76–86 cm, has a broad global range across Europe, Asia, the Americas, and Australia. Stout black bill adapted for catching crabs, insects, and small vertebrates — atypically terrestrial for a tern. Summers in marshes and steppes; winters on tropical coasts.
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.