Atlantic White Tern vs Indian Skimmer
Gygis alba 比較対象 Rynchops albicollis
Side-by-Side Comparison
| 属性 | Atlantic White Tern | Indian Skimmer |
|---|---|---|
| 学名 | Gygis alba | Rynchops albicollis |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保全状況 | Least Concern | Endangered |
| 体長 | — | — |
| 翼開長 | 50.4 cm (19.8 in) | 74.4 cm (29.3 in) |
| 体重 | 138.0 g (4.87 oz) | 164.0 g (5.78 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 1 | 2-5 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Least Concern
Atlantic White Tern
Endangered
Indian Skimmer
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。
Indian Skimmer
Indian Skimmer: 38–43 cm, black-and-white skimmer with an orange-and-yellow bill and white collar. Resident on large sandy rivers of the Indian subcontinent. VU. Feeds by skimming river surface with protruding lower mandible to catch fish. Severely threatened by sand-mining, dam building, and human disturbance at nesting colonies.