Black-tailed Gull vs Bonaparte's Gull
Larus crassirostris ile kıyaslandığında Larus philadelphia
Side-by-Side Comparison
| Özellik | Black-tailed Gull | Bonaparte's Gull |
|---|---|---|
| Bilimsel Ad | Larus crassirostris | Larus philadelphia |
| Takım | Charadriiformes | Charadriiformes |
| Familya | Laridae | Laridae |
| Koruma Durumu | Least Concern | Least Concern |
| Uzunluk | — | — |
| Kanat Açıklığı | 72,8 cm (28.7 in) | 51,9 cm (20.4 in) |
| Ağırlık | 675,0 g (23.81 oz) | 204,575 g (7.22 oz) |
| Beslenme | -- | -- |
| Kuluçka Büyüklüğü | 2-3 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Ortak Yaşam Alanları
Black-tailed Gull only
Hiçbiri
Bonaparte's Gull only
Koruma Durumu
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.