Yellow-billed Loon vs Red-throated Loon
Gavia adamsii 对比 Gavia stellata
Side-by-Side Comparison
| 属性 | Yellow-billed Loon | Red-throated Loon |
|---|---|---|
| 学名 | Gavia adamsii | Gavia stellata |
| 目 | Gaviiformes | Gaviiformes |
| 科 | Gaviidae | Gaviidae |
| 保护状况 | Near Threatened | Least Concern |
| 体长 | — | — |
| 翼展 | 74.3 cm (29.3 in) | 55.1 cm (21.7 in) |
| 体重 | 5125.0 g (180.78 oz) | 1816.6666666666667 g (64.08 oz) |
| 食性 | -- | -- |
| 产卵数 | 2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Near Threatened
Yellow-billed Loon
Least Concern
Red-throated Loon
About These Birds
Yellow-billed Loon
Yellow-billed Loon, 77–100 cm, is the largest loon, breeding on Arctic tundra lakes of North America and Russia, wintering on sub-Arctic coasts. Ivory-yellow upturned bill diagnostic. Otherwise similar to Common Loon. Piscivore; dives for fish in coastal waters. Near Threatened; climate-sensitive Arctic breeder.
Red-throated Loon
红喉潜鸟（约2公斤）是体型最小的潜鸟，繁殖于北极和亚北极湖泊，在沿海地区越冬。繁殖羽具有砖红色喉斑。以鱼类为食，善于潜水捕猎。无危；在北极地区广布，但某些越冬种群面临来自油污和渔网的威胁。