Red-legged Kittiwake vs African Skimmer
Rissa brevirostris 比較対象 Rynchops flavirostris
Side-by-Side Comparison
| 属性 | Red-legged Kittiwake | African Skimmer |
|---|---|---|
| 学名 | Rissa brevirostris | Rynchops flavirostris |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保全状況 | Vulnerable | Least Concern |
| 体長 | — | — |
| 翼開長 | 60.0 cm (23.6 in) | 66.4 cm (26.1 in) |
| 体重 | 401.6666666666667 g (14.17 oz) | 165.66666666666666 g (5.84 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 1-3 | 1-5 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Vulnerable
Red-legged Kittiwake
Least Concern
African Skimmer
About These Birds
Red-legged Kittiwake
Red-legged Kittiwake, 35–39 cm, has a very restricted range on only four Aleutian and Pribilof Island colonies, with a world population under 200,000. Resembles Black-legged Kittiwake but with bright red legs, darker upperparts, and white underwing tips. Pelagic piscivore; Vulnerable and declining.
African Skimmer
African Skimmer: 36–42 cm, black-and-white skimmer with a long bright orange-yellow bill where the lower mandible is longer than the upper. Flies low over large rivers and lakes, cutting the water surface with the lower bill to catch fish. Resident and partial migrant along large rivers and lakes of sub-Saharan Africa. NT.