Aleutian Tern vs Ross's Gull
Onychoprion aleuticus so với Rhodostethia rosea
Side-by-Side Comparison
| Thuộc Tính | Aleutian Tern | Ross's Gull |
|---|---|---|
| Tên Khoa Học | Onychoprion aleuticus | Rhodostethia rosea |
| 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) | 50,2 cm (19.8 in) |
| Khối Lượng | 104,88 g (3.70 oz) | 185,0 g (6.53 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1-4 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Tình Trạng Bảo Tồn
Vulnerable
Aleutian Tern
Least Concern
Ross's Gull
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.
Ross's Gull
Ross's Gull, 29–32 cm, is a delicate Arctic gull breeding in Siberian tundra, with its winter range largely unknown — possibly far out in the pack ice. Rosy flush to underparts in breeding plumage; wedge-shaped tail; black neck ring. Feeds on invertebrates and small fish along ice edges.