Saunders's Gull vs Sandwich Tern
Saundersilarus saundersi 对比 Thalasseus sandvicensis
Side-by-Side Comparison
| 属性 | Saunders's Gull | Sandwich Tern |
|---|---|---|
| 学名 | Saundersilarus saundersi | Thalasseus sandvicensis |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Laridae | Laridae |
| 保护状况 | Vulnerable | Least Concern |
| 体长 | — | — |
| 翼展 | 54.8 cm (21.6 in) | 57.7 cm (22.7 in) |
| 体重 | 195.0 g (6.88 oz) | 223.5 g (7.88 oz) |
| 食性 | -- | -- |
| 产卵数 | 1-6 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Vulnerable
Saunders's Gull
Least Concern
Sandwich Tern
About These Birds
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.
Sandwich Tern
Sandwich Tern, 36–41 cm, is a widespread coastal tern breeding from Western Europe and the Caspian Sea to the Caribbean. Black cap with shaggy crest, slender black bill with a yellow tip. Plunge-dives forcefully for sand eels and sprats. Strongly migratory; European birds winter to West Africa.