Black Skimmer vs Saunders's Gull
Rynchops niger 比較対象 Saundersilarus saundersi
Side-by-Side Comparison
| 属性 | Black Skimmer | Saunders's Gull |
|---|---|---|
| 学名 | Rynchops niger | Saundersilarus saundersi |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保全状況 | Least Concern | Vulnerable |
| 体長 | — | — |
| 翼開長 | 73.1 cm (28.8 in) | 54.8 cm (21.6 in) |
| 体重 | 293.6666666666667 g (10.36 oz) | 195.0 g (6.88 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 1-6 | 1-6 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Least Concern
Black Skimmer
Vulnerable
Saunders's Gull
About These Birds
Black Skimmer
Black Skimmer: 40–50 cm, the largest skimmer with jet black upperparts, white underparts, and an outsized red-and-black bill with protruding lower mandible. Inhabits large rivers, estuaries, and coastal lagoons of North and South America. Feeds at dawn and dusk by skimming water surface. Nests colonially on sandy beaches. Partly migratory.
Saunders's Gull
Saunders's Gull, 29–32 cm, is a Vulnerable gull breeding in coastal saltmarshes of China and Korea, wintering along East Asian coasts to Vietnam. Black hood in breeding plumage, white wing-tip mirrors. Feeds on crustaceans and invertebrates in tidal mudflats. Threatened by reclamation of Yellow Sea tidal flats.