Aleutian Tern vs South American Tern
Onychoprion aleuticus so với Sterna hirundinacea
Side-by-Side Comparison
| Thuộc Tính | Aleutian Tern | South American Tern |
|---|---|---|
| Tên Khoa Học | Onychoprion aleuticus | Sterna hirundinacea |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Laridae | Laridae |
| Tình Trạng Bảo Tồn | Vulnerable | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 52,4 cm (20.6 in) | 59,3 cm (23.3 in) |
| Khối Lượng | 104,88 g (3.70 oz) | 190,25 g (6.71 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1-4 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Aleutian Tern only
South American Tern only
Không
Tình Trạng Bảo Tồn
Vulnerable
Aleutian Tern
Least Concern
South American 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.
South American Tern
South American Tern, 40–44 cm, is the largest South American tern, breeding from Peru around Cape Horn to southeastern Brazil. Red bill, grey mantle, black cap. Pelagic and coastal piscivore; strong plunge-diver. Movements poorly known; some populations may migrate north along both coasts.