Aleutian Tern vs Common Tern
Onychoprion aleuticus so với Sterna hirundo
Side-by-Side Comparison
| Thuộc Tính | Aleutian Tern | Common Tern |
|---|---|---|
| Tên Khoa Học | Onychoprion aleuticus | Sterna hirundo |
| 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) | 50,7 cm (20.0 in) |
| Khối Lượng | 104,88 g (3.70 oz) | 125,75 g (4.44 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1-4 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Aleutian Tern only
Không
Common Tern only
Không
Tình Trạng Bảo Tồn
Vulnerable
Aleutian Tern
Least Concern
Common 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.
Common Tern
Common Tern, 31–35 cm, wingspan 77–98 cm, is among the most widespread seabirds, breeding across the Holarctic and wintering in the Southern Hemisphere. Grey back, white below, orange-red bill with dark tip, black cap. Plunge-dives for fish. One of the longest-distance migrants in the Northern Hemisphere.