Black-tailed Gull vs Ring-billed Gull
Larus crassirostris ile kıyaslandığında Larus delawarensis
Side-by-Side Comparison
| Özellik | Black-tailed Gull | Ring-billed Gull |
|---|---|---|
| Bilimsel Ad | Larus crassirostris | Larus delawarensis |
| Takım | Charadriiformes | Charadriiformes |
| Familya | Laridae | Laridae |
| Koruma Durumu | Least Concern | Least Concern |
| Uzunluk | — | — |
| Kanat Açıklığı | 72,8 cm (28.7 in) | 73,2 cm (28.8 in) |
| Ağırlık | 675,0 g (23.81 oz) | 500,0 g (17.64 oz) |
| Beslenme | -- | -- |
| Kuluçka Büyüklüğü | 2-3 | 3 |
| Population Trend | — | — |
Habitat Comparison
Koruma Durumu
Least Concern
Black-tailed Gull
Least Concern
Ring-billed 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.
Ring-billed Gull
Ring-billed Gull, 43–54 cm, is North America's most abundant gull, breeding on lakes from the Great Plains to the Great Lakes and wintering on all coasts. Adult has a distinctive black ring near bill tip, yellow legs. Omnivore; thrives on garbage, parking lots, and agricultural fields.