Black-tailed Gull vs Black Skimmer
Larus crassirostris 对比 Rynchops niger
Side-by-Side Comparison
| 属性 | Black-tailed Gull | Black Skimmer |
|---|---|---|
| 学名 | Larus crassirostris | Rynchops niger |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 72.8 cm (28.7 in) | 73.1 cm (28.8 in) |
| 体重 | 675.0 g (23.81 oz) | 293.6666666666667 g (10.36 oz) |
| 食性 | -- | -- |
| 产卵数 | 2-3 | 1-6 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Least Concern
Black-tailed Gull
Least Concern
Black Skimmer
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。
Black Skimmer
Black Skimmer: 40–50 cm, the largest skimmer with jet black upperparts, white underparts, and an outsized red-and-black bill with protruding lower mandible. Inhabits large rivers, estuaries, and coastal lagoons of North and South America. Feeds at dawn and dusk by skimming water surface. Nests colonially on sandy beaches. Partly migratory.