Black-fronted Tern vs Aleutian Tern
Chlidonias albostriatus в сравнении с Onychoprion aleuticus
Side-by-Side Comparison
| Характеристика | Black-fronted Tern | Aleutian Tern |
|---|---|---|
| Научное название | Chlidonias albostriatus | Onychoprion aleuticus |
| Отряд | Charadriiformes | Charadriiformes |
| Семейство | Laridae | Laridae |
| Охранный статус | Endangered | Vulnerable |
| Длина | — | — |
| Размах крыльев | 47,9 cm (18.9 in) | 52,4 cm (20.6 in) |
| Масса | 93,0 g (3.28 oz) | 104,88 g (3.70 oz) |
| Питание | -- | -- |
| Размер кладки | 2 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Общие среды обитания
Black-fronted Tern only
Нет
Aleutian Tern only
Охранный статус
Endangered
Black-fronted Tern
Vulnerable
Aleutian Tern
About These Birds
Black-fronted Tern
Black-fronted Tern, 27–30 cm, is Endemic and Near Threatened, breeding on South Island New Zealand river shingle beds. Orange bill, blue-grey body, black cap; juveniles brownish. Piscivore and insectivore; hovers and dips over braided rivers. Winters on nearby North Island and Australian coasts.
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.