Aleutian Tern vs Bridled Tern
Onychoprion aleuticus в сравнении с Onychoprion anaethetus
Side-by-Side Comparison
| Характеристика | Aleutian Tern | Bridled Tern |
|---|---|---|
| Научное название | Onychoprion aleuticus | Onychoprion anaethetus |
| Отряд | Charadriiformes | Charadriiformes |
| Семейство | Laridae | Laridae |
| Охранный статус | Vulnerable | Least Concern |
| Длина | — | — |
| Размах крыльев | 52,4 cm (20.6 in) | 54,7 cm (21.5 in) |
| Масса | 104,88 g (3.70 oz) | 129,13333333333333 g (4.56 oz) |
| Питание | -- | -- |
| Размер кладки | 1-4 | 1 |
| Population Trend | — | — |
Habitat Comparison
Охранный статус
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.