Common Gull-billed Tern vs Black-tailed Gull
Gelochelidon nilotica so với Larus crassirostris
Side-by-Side Comparison
| Thuộc Tính | Common Gull-billed Tern | Black-tailed Gull |
|---|---|---|
| Tên Khoa Học | Gelochelidon nilotica | Larus crassirostris |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Laridae | Laridae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 61,6 cm (24.3 in) | 72,8 cm (28.7 in) |
| Khối Lượng | 214,075 g (7.55 oz) | 675,0 g (23.81 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1-3 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Common Gull-billed Tern only
Black-tailed Gull only
Không
Tình Trạng Bảo Tồn
Least Concern
Common Gull-billed Tern
Least Concern
Black-tailed Gull
About These Birds
Common Gull-billed Tern
Common Gull-billed Tern, 35–38 cm, wingspan 76–86 cm, has a broad global range across Europe, Asia, the Americas, and Australia. Stout black bill adapted for catching crabs, insects, and small vertebrates — atypically terrestrial for a tern. Summers in marshes and steppes; winters on tropical coasts.
Black-tailed Gull
Black-tailed Gull, 44–48 cm, is common on East Asian coasts from Russia to China, Japan, and Korea. Grey mantle, white body, yellow bill with red spot and black subterminal band, yellow legs. Omnivore; very vocal, known as the 'cat gull' for its mewing calls. Migratory; winters south to Vietnam.