Common Gull-billed Tern vs Aleutian Tern
Gelochelidon nilotica verglichen mit Onychoprion aleuticus
Side-by-Side Comparison
| Merkmal | Common Gull-billed Tern | Aleutian Tern |
|---|---|---|
| Wissenschaftlicher Name | Gelochelidon nilotica | Onychoprion aleuticus |
| Ordnung | Charadriiformes | Charadriiformes |
| Familie | Laridae | Laridae |
| Erhaltungsstatus | Least Concern | Vulnerable |
| Länge | — | — |
| Flügelspannweite | 61,6 cm (24.3 in) | 52,4 cm (20.6 in) |
| Gewicht | 214,075 g (7.55 oz) | 104,88 g (3.70 oz) |
| Ernährung | -- | -- |
| Gelegegröße | 1-3 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Gemeinsame Lebensräume
Common Gull-billed Tern only
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Aleutian Tern only
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Erhaltungsstatus
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.