Heermann's Gull vs River Tern
Larus heermanni 对比 Sterna aurantia
Side-by-Side Comparison
| 属性 | Heermann's Gull | River Tern |
|---|---|---|
| 学名 | Larus heermanni | Sterna aurantia |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保护状况 | Near Threatened | Vulnerable |
| 体长 | — | — |
| 翼展 | 67.2 cm (26.5 in) | 52.4 cm (20.6 in) |
| 体重 | 448.26666666666665 g (15.81 oz) | 187.5 g (6.61 oz) |
| 食性 | -- | -- |
| 产卵数 | 1-2 | 3-4 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Near Threatened
Heermann's Gull
Vulnerable
River Tern
About These Birds
Heermann's Gull
赫尔曼鸥在加利福尼亚海岸和下加利福尼亚半岛岛屿繁殖，以暗色体色和红色嘴为特征。
River Tern
River Tern, 38–43 cm, is a large freshwater tern of South and Southeast Asia, found along major rivers from Pakistan to Thailand. Yellow-orange bill, grey back, black cap in breeding plumage. Piscivore; plunge-dives into clear river water. Near Threatened due to river sand-mining and disturbance.