Atlantic White Tern vs White-cheeked Tern
Gygis alba 比較対象 Sterna repressa
Side-by-Side Comparison
| 属性 | Atlantic White Tern | White-cheeked Tern |
|---|---|---|
| 学名 | Gygis alba | Sterna repressa |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 50.4 cm (19.8 in) | 48.3 cm (19.0 in) |
| 体重 | 138.0 g (4.87 oz) | 118.75 g (4.19 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 1 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Least Concern
Atlantic White Tern
Least Concern
White-cheeked Tern
About These Birds
Atlantic White Tern
シロアジサシは体長28〜33 cm、翼幅76〜87 cm、霊妙な白色の海鳥で青灰色のくちばし・青みがかった眼輪・大きな暗色の瞳を持つ。大西洋の熱帯の島（アセンション島・セントヘレナ島など）に繁殖し、近縁種はインド・太平洋に広く分布。巣材なしで裸の枝に産卵。水面近くで小魚を捕食。
White-cheeked Tern
White-cheeked Tern, 32–34 cm, breeds around the Red Sea, Persian Gulf, and Indian Ocean coasts from East Africa to Pakistan. Grey above and below in breeding plumage, white cheek patch below the black cap. Piscivore; plunge-dives in coastal waters. Some movement to winter quarters in East African coasts.