Great Black-backed Gull vs Aleutian Tern
Larus marinus в сравнении с Onychoprion aleuticus
Side-by-Side Comparison
| Характеристика | Great Black-backed Gull | Aleutian Tern |
|---|---|---|
| Научное название | Larus marinus | Onychoprion aleuticus |
| Отряд | Charadriiformes | Charadriiformes |
| Семейство | Laridae | Laridae |
| Охранный статус | Least Concern | Vulnerable |
| Длина | — | — |
| Размах крыльев | 95,6 cm (37.6 in) | 52,4 cm (20.6 in) |
| Масса | 1678,3333333333333 g (59.20 oz) | 104,88 g (3.70 oz) |
| Питание | -- | -- |
| Размер кладки | 1-3 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Общие среды обитания
Great Black-backed Gull only
Нет
Aleutian Tern only
Нет
Охранный статус
Least Concern
Great Black-backed Gull
Vulnerable
Aleutian Tern
About These Birds
Great Black-backed Gull
Great Black-backed Gull, 61–74 cm, wingspan 142–168 cm, is the world's largest gull, breeding along North Atlantic coasts. Jet-black mantle, white body, massive yellow bill. Dominant predator among seabirds; preys on seabird chicks, puffins, rabbits, as well as scavenging. Partially migratory.
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.