Saunders's Gull vs Snowy-crowned Tern
Saundersilarus saundersi مقارنةً بـ Sterna trudeaui
Side-by-Side Comparison
| السمة | Saunders's Gull | Snowy-crowned Tern |
|---|---|---|
| الاسم العلمي | Saundersilarus saundersi | Sterna trudeaui |
| الرتبة | Charadriiformes | Charadriiformes |
| الفصيلة | Laridae | Laridae |
| حالة الحفاظ | Vulnerable | Least Concern |
| الطول | — | — |
| طول الجناح | 54,8 cm (21.6 in) | 51,2 cm (20.2 in) |
| الوزن | 195,0 g (6.88 oz) | 149,75 g (5.28 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1-6 | 2-4 |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
Vulnerable
Saunders's Gull
Least Concern
Snowy-crowned 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.
Snowy-crowned Tern
Snowy-crowned Tern, 33–35 cm, breeds along the Atlantic coasts of Argentina and Uruguay, wintering north to southern Brazil. White crown with black post-ocular mark (unlike a full black cap), yellow-tipped red bill. Coastal and estuarine piscivore; plunge-dives for small fish.