Belcher's Gull vs Aleutian Tern
Larus belcheri so với Onychoprion aleuticus
Side-by-Side Comparison
| Thuộc Tính | Belcher's Gull | Aleutian Tern |
|---|---|---|
| Tên Khoa Học | Larus belcheri | Onychoprion aleuticus |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Laridae | Laridae |
| Tình Trạng Bảo Tồn | Least Concern | Vulnerable |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 73,0 cm (28.7 in) | 52,4 cm (20.6 in) |
| Khối Lượng | 642,5 g (22.66 oz) | 104,88 g (3.70 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1-3 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Tình Trạng Bảo Tồn
Least Concern
Belcher's Gull
Vulnerable
Aleutian Tern
About These Birds
Belcher's Gull
Belcher's Gull, 49–52 cm, is endemic to the Humboldt Current coast of Peru and northern Chile. Black mantle, white body, yellow bill with red and black band. Piscivore and scavenger; closely associated with fishing ports and anchovy-rich upwelling waters. Resident along its narrow coastal range.
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.