Aleutian Tern vs Ivory Gull
Onychoprion aleuticus в сравнении с Pagophila eburnea
Side-by-Side Comparison
| Характеристика | Aleutian Tern | Ivory Gull |
|---|---|---|
| Научное название | Onychoprion aleuticus | Pagophila eburnea |
| Отряд | Charadriiformes | Charadriiformes |
| Семейство | Laridae | Laridae |
| Охранный статус | Vulnerable | Near Threatened |
| Длина | — | — |
| Размах крыльев | 52,4 cm (20.6 in) | 66,7 cm (26.3 in) |
| Масса | 104,88 g (3.70 oz) | 578,3333333333334 g (20.40 oz) |
| Питание | -- | -- |
| Размер кладки | 1-4 | 2 |
| Population Trend | — | — |
Habitat Comparison
Охранный статус
Vulnerable
Aleutian Tern
Near Threatened
Ivory Gull
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.
Ivory Gull
Ivory Gull, 40–43 cm, is entirely white with black legs, breeding only on High Arctic ice caps and cliffs in Canada, Greenland, Svalbard, and Russia. Winters at sea ice edges in the High Arctic. Scavenges on marine mammal carcasses and sea ice invertebrates. Near Threatened; climate-sensitive.