Aleutian Tern vs Elegant Tern
Onychoprion aleuticus в сравнении с Thalasseus elegans
Side-by-Side Comparison
| Характеристика | Aleutian Tern | Elegant Tern |
|---|---|---|
| Научное название | Onychoprion aleuticus | Thalasseus elegans |
| Отряд | Charadriiformes | Charadriiformes |
| Семейство | Laridae | Laridae |
| Охранный статус | Vulnerable | Near Threatened |
| Длина | — | — |
| Размах крыльев | 52,4 cm (20.6 in) | 59,3 cm (23.3 in) |
| Масса | 104,88 g (3.70 oz) | 236,16666666666666 g (8.33 oz) |
| Питание | -- | -- |
| Размер кладки | 1-4 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Охранный статус
Vulnerable
Aleutian Tern
Near Threatened
Elegant 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.
Elegant Tern
Elegant Tern, 39–43 cm, breeds in a few large colonies on islands off Baja California and winters along Pacific coasts of South America. Long, drooping orange bill, shaggy black crest. Piscivore; dependent on Northern Anchovy and Pacific Sardine. Near Threatened; highly colonial breeder.