Aleutian Tern vs Black-legged Kittiwake
Onychoprion aleuticus в сравнении с Rissa tridactyla
Side-by-Side Comparison
| Характеристика | Aleutian Tern | Black-legged Kittiwake |
|---|---|---|
| Научное название | Onychoprion aleuticus | Rissa tridactyla |
| Отряд | Charadriiformes | Charadriiformes |
| Семейство | Laridae | Laridae |
| Охранный статус | Vulnerable | Vulnerable |
| Длина | — | — |
| Размах крыльев | 52,4 cm (20.6 in) | 60,2 cm (23.7 in) |
| Масса | 104,88 g (3.70 oz) | 439,3333333333333 g (15.50 oz) |
| Питание | -- | -- |
| Размер кладки | 1-4 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Общие среды обитания
Aleutian Tern only
Black-legged Kittiwake only
Нет
Охранный статус
Vulnerable
Aleutian Tern
Vulnerable
Black-legged Kittiwake
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.
Black-legged Kittiwake
Black-legged Kittiwake, 38–40 cm, wingspan 91–105 cm, is the most abundant gull globally, with millions breeding on cliff ledges across the North Atlantic and Pacific. White body, grey mantle, solid black wing tips, yellow bill, black legs. Pelagic piscivore outside breeding. Vulnerable; declining.