Atlantic White Tern vs Aleutian Tern
Gygis alba в сравнении с Onychoprion aleuticus
Side-by-Side Comparison
| Характеристика | Atlantic White Tern | Aleutian Tern |
|---|---|---|
| Научное название | Gygis alba | Onychoprion aleuticus |
| Отряд | Charadriiformes | Charadriiformes |
| Семейство | Laridae | Laridae |
| Охранный статус | Least Concern | Vulnerable |
| Длина | — | — |
| Размах крыльев | 50,4 cm (19.8 in) | 52,4 cm (20.6 in) |
| Масса | 138,0 g (4.87 oz) | 104,88 g (3.70 oz) |
| Питание | -- | -- |
| Размер кладки | 1 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Общие среды обитания
Atlantic White Tern only
Нет
Aleutian Tern only
Охранный статус
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.