Black-tailed Gull vs Relict Gull
Larus crassirostris so với Larus relictus
Side-by-Side Comparison
| Thuộc Tính | Black-tailed Gull | Relict Gull |
|---|---|---|
| Tên Khoa Học | Larus crassirostris | Larus relictus |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Laridae | Laridae |
| Tình Trạng Bảo Tồn | Least Concern | Vulnerable |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 72,8 cm (28.7 in) | 67,0 cm (26.4 in) |
| Khối Lượng | 675,0 g (23.81 oz) | 516,75 g (18.23 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 2-3 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Black-tailed Gull only
Không
Relict Gull only
Tình Trạng Bảo Tồn
Least Concern
Black-tailed Gull
Vulnerable
Relict Gull
About These Birds
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.
Relict Gull
Relict Gull, 44–46 cm, is a Vulnerable species breeding on remote saline lakes in Mongolia and northern China. Black hood with white eye-crescents, red bill, red legs. Very poorly known outside breeding season; winters on Yellow Sea coasts. Threatened by drought and wetland degradation.