Grey-backed Tern vs African Skimmer
Onychoprion lunatus 比較対象 Rynchops flavirostris
Side-by-Side Comparison
| 属性 | Grey-backed Tern | African Skimmer |
|---|---|---|
| 学名 | Onychoprion lunatus | Rynchops flavirostris |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 52.2 cm (20.6 in) | 66.4 cm (26.1 in) |
| 体重 | 126.21666666666665 g (4.45 oz) | 165.66666666666666 g (5.84 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 1 | 1-5 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Least Concern
Grey-backed Tern
Least Concern
African Skimmer
About These Birds
Grey-backed Tern
Grey-backed Tern, 35–37 cm, is a Pacific seabird breeding on islands from Hawaii to Micronesia and Polynesia. Pale grey back distinguishes it from the similar Bridled Tern; white below with black cap. Piscivore; surface-dips and shallow plunge-dives. Largely pelagic when not breeding.
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.