Atlantic White Tern vs Yellow-footed Gull
Gygis alba 比較対象 Larus livens
Side-by-Side Comparison
| 属性 | Atlantic White Tern | Yellow-footed Gull |
|---|---|---|
| 学名 | Gygis alba | Larus livens |
| 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) | 80.7 cm (31.8 in) |
| 体重 | 138.0 g (4.87 oz) | 1295.0 g (45.68 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 1 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Least Concern
Atlantic White Tern
Least Concern
Yellow-footed Gull
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。
Yellow-footed Gull
Yellow-footed Gull, 53–58 cm, has a very restricted range — endemic to the Gulf of California with post-breeding dispersal to Salton Sea. Yellow feet (unique among large western gulls), yellow bill with red spot. Piscivore and scavenger; forages on rocky shores. Resident; does not undertake long migrations.