Ring-billed Gull vs Saunders's Gull
Larus delawarensis 对比 Saundersilarus saundersi
Side-by-Side Comparison
| 属性 | Ring-billed Gull | Saunders's Gull |
|---|---|---|
| 学名 | Larus delawarensis | Saundersilarus saundersi |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保护状况 | Least Concern | Vulnerable |
| 体长 | — | — |
| 翼展 | 73.2 cm (28.8 in) | 54.8 cm (21.6 in) |
| 体重 | 500.0 g (17.64 oz) | 195.0 g (6.88 oz) |
| 食性 | -- | -- |
| 产卵数 | 3 | 1-6 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Least Concern
Ring-billed Gull
Vulnerable
Saunders's Gull
About These Birds
Ring-billed Gull
环嘴鸥广泛分布于北美全区，嘴上有黑色带是其特征，是最常见的鸥类之一。
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.