Aleutian Tern vs White-fronted Tern
Onychoprion aleuticus so với Sterna striata
Side-by-Side Comparison
| Thuộc Tính | Aleutian Tern | White-fronted Tern |
|---|---|---|
| Tên Khoa Học | Onychoprion aleuticus | Sterna striata |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Laridae | Laridae |
| Tình Trạng Bảo Tồn | Vulnerable | Near Threatened |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 52,4 cm (20.6 in) | 54,8 cm (21.6 in) |
| Khối Lượng | 104,88 g (3.70 oz) | 131,5 g (4.64 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1-4 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Aleutian Tern only
White-fronted Tern only
Không
Tình Trạng Bảo Tồn
Vulnerable
Aleutian Tern
Near Threatened
White-fronted 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.
White-fronted Tern
White-fronted Tern, 35–43 cm, is New Zealand's most common tern, breeding on coastal and riverine sites throughout the islands. White forehead contrasts with black cap; orange-red bill. Piscivore; hovers and plunge-dives in coastal waters and off river mouths. Winters on Australian coasts.