Yellow-billed Loon vs Red-throated Loon
Gavia adamsii 比較対象 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 |
| 保全状況 | Near Threatened | Least Concern |
| 体長 | — | — |
| 翼開長 | 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 | -- | -- |
| 一腹卵数 | 2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
保全状況
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
Red-throated Loon, 53–69 cm, is the smallest loon, breeding on small Arctic and boreal tundra pools from Alaska to Scotland. Breeding adult: grey head, brick-red throat patch, plain brown-grey back. Distinctive upturned bill. Migratory; winters on coastal seas. Flies to separate feeding sites from breeding ponds.