Black-tailed Gull vs Ivory Gull
Larus crassirostris 对比 Pagophila eburnea
Side-by-Side Comparison
| 属性 | Black-tailed Gull | Ivory Gull |
|---|---|---|
| 学名 | Larus crassirostris | Pagophila eburnea |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保护状况 | Least Concern | Near Threatened |
| 体长 | — | — |
| 翼展 | 72.8 cm (28.7 in) | 66.7 cm (26.3 in) |
| 体重 | 675.0 g (23.81 oz) | 578.3333333333334 g (20.40 oz) |
| 食性 | -- | -- |
| 产卵数 | 2-3 | 2 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Least Concern
Black-tailed Gull
Near Threatened
Ivory Gull
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。
Ivory Gull
Ivory Gull, 40–43 cm, is entirely white with black legs, breeding only on High Arctic ice caps and cliffs in Canada, Greenland, Svalbard, and Russia. Winters at sea ice edges in the High Arctic. Scavenges on marine mammal carcasses and sea ice invertebrates. Near Threatened; climate-sensitive.