Swallow-tailed Gull vs Saunders's Gull
Creagrus furcatus 比較対象 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 |
| 保全状況 | Least Concern | Vulnerable |
| 体長 | — | — |
| 翼開長 | 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 | -- | -- |
| 一腹卵数 | 1 | 1-6 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Least Concern
Swallow-tailed Gull
Vulnerable
Saunders's Gull
About These Birds
Swallow-tailed Gull
ツバメオキワメ（Creagrus furcatus）— ガラパゴス諸島で繁殖する世界唯一の完全な夜行性カモメ。燕尾状の尾と赤い眼輪が特徴。沖合で採食する。
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.