Black-tailed Gull vs Kerguelen Tern
Larus crassirostris 对比 Sterna virgata
Side-by-Side Comparison
| 属性 | Black-tailed Gull | Kerguelen Tern |
|---|---|---|
| 学名 | Larus crassirostris | Sterna virgata |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保护状况 | Least Concern | Near Threatened |
| 体长 | — | — |
| 翼展 | 72.8 cm (28.7 in) | 50.0 cm (19.7 in) |
| 体重 | 675.0 g (23.81 oz) | 127.5 g (4.50 oz) |
| 食性 | -- | -- |
| 产卵数 | 2-3 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Least Concern
Black-tailed Gull
Near Threatened
Kerguelen 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。
Kerguelen Tern
Kerguelen Tern, 31–33 cm, is restricted to a handful of sub-Antarctic islands including Kerguelen and Crozet. Darker grey than Antarctic Tern, with reddish bill. Piscivore and invertivore; forages in kelp beds and coastal waters. Near Threatened; small, isolated population vulnerable to introduced predators.