Swallow-tailed Gull vs Saunders's Gull
Creagrus furcatus 对比 Saundersilarus saundersi
Side-by-Side Comparison
| 属性 | Swallow-tailed Gull | Saunders's Gull |
|---|---|---|
| 学名 | Creagrus furcatus | Saundersilarus saundersi |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保护状况 | Least Concern | Vulnerable |
| 体长 | — | — |
| 翼展 | 81.8 cm (32.2 in) | 54.8 cm (21.6 in) |
| 体重 | 695.0 g (24.52 oz) | 195.0 g (6.88 oz) |
| 食性 | -- | -- |
| 产卵数 | 1 | 1-6 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Least Concern
Swallow-tailed Gull
Vulnerable
Saunders's Gull
About These Birds
Swallow-tailed Gull
燕尾鸥（Creagrus furcatus）— 在加拉帕戈斯群岛繁殖的世界上唯一完全夜行性的鸥。燕尾状尾羽和红色眼圈为特征。在海上取食。
Saunders's Gull
Saunders's Gull, 29–32 cm, is a Vulnerable gull breeding in coastal saltmarshes of China and Korea, wintering along East Asian coasts to Vietnam. Black hood in breeding plumage, white wing-tip mirrors. Feeds on crustaceans and invertebrates in tidal mudflats. Threatened by reclamation of Yellow Sea tidal flats.