Slaty-backed Gull vs Saunders's Gull
Larus schistisagus 对比 Saundersilarus saundersi
Side-by-Side Comparison
| 属性 | Slaty-backed Gull | Saunders's Gull |
|---|---|---|
| 学名 | Larus schistisagus | Saundersilarus saundersi |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保护状况 | Least Concern | Vulnerable |
| 体长 | — | — |
| 翼展 | 87.0 cm (34.3 in) | 54.8 cm (21.6 in) |
| 体重 | 1280.5 g (45.17 oz) | 195.0 g (6.88 oz) |
| 食性 | -- | -- |
| 产卵数 | 1-4 | 1-6 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Least Concern
Slaty-backed Gull
Vulnerable
Saunders's Gull
About These Birds
Slaty-backed Gull
灰背鸥广泛繁殖于北太平洋沿岸，以暗色背部和翼为特征的大型鸥类，在日本也常见。
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.