Atlantic White Tern vs Saunders's Gull
Gygis alba 对比 Saundersilarus saundersi
Side-by-Side Comparison
| 属性 | Atlantic White Tern | Saunders's Gull |
|---|---|---|
| 学名 | Gygis alba | Saundersilarus saundersi |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保护状况 | Least Concern | Vulnerable |
| 体长 | — | — |
| 翼展 | 50.4 cm (19.8 in) | 54.8 cm (21.6 in) |
| 体重 | 138.0 g (4.87 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
Atlantic White Tern
Vulnerable
Saunders's Gull
About These Birds
Atlantic White Tern
白燕鸥是分布于热带海洋的优美鸟类，全身纯白，眼大而深色，喙细长。独特之处在于直接将单枚卵产在裸露的树枝或岩石上，不筑巢。广泛分布于太平洋和印度洋的热带岛屿，以小型鱼类和甲壳类为食，飞行优雅灵活。
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.