Black-tailed Gull vs Arctic Herring Gull
Larus crassirostris so với Larus smithsonianus
Side-by-Side Comparison
| Thuộc Tính | Black-tailed Gull | Arctic Herring Gull |
|---|---|---|
| Tên Khoa Học | Larus crassirostris | Larus smithsonianus |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Laridae | Laridae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 72,8 cm (28.7 in) | 85,9 cm (33.8 in) |
| Khối Lượng | 675,0 g (23.81 oz) | 1108,0 g (39.08 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 2-3 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Black-tailed Gull only
Không
Arctic Herring Gull only
Tình Trạng Bảo Tồn
Least Concern
Black-tailed Gull
Least Concern
Arctic Herring 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.
Arctic Herring Gull
Arctic Herring Gull, 55–66 cm, breeds across Arctic North America and winters on all coasts of the US. Formerly lumped with European Herring Gull; darker-eyed on average, slightly more northerly range. Omnivore and scavenger; abundant at fishing ports, dumps, and beaches in winter.