Swallow-tailed Gull vs African Skimmer
Creagrus furcatus 比較対象 Rynchops flavirostris
Side-by-Side Comparison
| 属性 | Swallow-tailed Gull | African Skimmer |
|---|---|---|
| 学名 | Creagrus furcatus | Rynchops flavirostris |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 81.8 cm (32.2 in) | 66.4 cm (26.1 in) |
| 体重 | 695.0 g (24.52 oz) | 165.66666666666666 g (5.84 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 1 | 1-5 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Least Concern
Swallow-tailed Gull
Least Concern
African Skimmer
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。
African Skimmer
African Skimmer: 36–42 cm, black-and-white skimmer with a long bright orange-yellow bill where the lower mandible is longer than the upper. Flies low over large rivers and lakes, cutting the water surface with the lower bill to catch fish. Resident and partial migrant along large rivers and lakes of sub-Saharan Africa. NT.