Black-tailed Gull vs Least Tern
Larus crassirostris 对比 Sternula antillarum
Side-by-Side Comparison
| 属性 | Black-tailed Gull | Least Tern |
|---|---|---|
| 学名 | Larus crassirostris | Sternula antillarum |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 72.8 cm (28.7 in) | 33.0 cm (13.0 in) |
| 体重 | 675.0 g (23.81 oz) | 46.75 g (1.65 oz) |
| 食性 | -- | -- |
| 产卵数 | 2-3 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Least Concern
Black-tailed Gull
Least Concern
Least Tern
About These Birds
Black-tailed Gull
黑尾鸥以日本为中心分布于东亚沿岸，以猫叫声为特征的大型鸥类。
Least Tern
Least Tern is North America's smallest tern, 22–24 cm, breeding on sandy beaches and river sandbars from the Atlantic coast to the interior. Endangered (interior subspecies). Yellow bill, white forehead, grey upperparts. Hovers and plunge-dives for small fish in coastal and riverine habitats.