Black-tailed Gull vs Bonaparte's Gull
Larus crassirostris в сравнении с Larus philadelphia
Side-by-Side Comparison
| Характеристика | Black-tailed Gull | Bonaparte's Gull |
|---|---|---|
| Научное название | Larus crassirostris | Larus philadelphia |
| Отряд | Charadriiformes | Charadriiformes |
| Семейство | Laridae | Laridae |
| Охранный статус | Least Concern | Least Concern |
| Длина | — | — |
| Размах крыльев | 72,8 cm (28.7 in) | 51,9 cm (20.4 in) |
| Масса | 675,0 g (23.81 oz) | 204,575 g (7.22 oz) |
| Питание | -- | -- |
| Размер кладки | 2-3 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Общие среды обитания
Black-tailed Gull only
Нет
Bonaparte's Gull only
Охранный статус
Least Concern
Black-tailed Gull
Least Concern
Bonaparte's 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.
Bonaparte's Gull
Bonaparte's Gull, 28–30 cm, is North America's smallest Larus gull, breeding in boreal forests near lakes and wintering on both coasts. Breeding adult has a black hood; underwing shows white triangular flash. Planktivore and piscivore; buoyant, tern-like flight. Migratory; forms large winter flocks.