Andean Gull vs River Tern
Larus serranus so với Sterna aurantia
Side-by-Side Comparison
| Thuộc Tính | Andean Gull | River Tern |
|---|---|---|
| Tên Khoa Học | Larus serranus | Sterna aurantia |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Laridae | Laridae |
| Tình Trạng Bảo Tồn | Least Concern | Vulnerable |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 70,6 cm (27.8 in) | 52,4 cm (20.6 in) |
| Khối Lượng | 478,0 g (16.86 oz) | 187,5 g (6.61 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1-4 | 3-4 |
| Population Trend | — | — |
Habitat Comparison
Tình Trạng Bảo Tồn
Least Concern
Andean Gull
Vulnerable
River Tern
About These Birds
Andean Gull
Andean Gull, 45–48 cm, breeds at high-altitude Andean lakes from Colombia to Argentina, typically above 3000 m. Black hood in breeding plumage; white below with grey mantle. Largely insectivore, following cattle or foraging at lake edges. Partial altitudinal migrant descending to Pacific and Atlantic coasts in winter.
River Tern
River Tern, 38–43 cm, is a large freshwater tern of South and Southeast Asia, found along major rivers from Pakistan to Thailand. Yellow-orange bill, grey back, black cap in breeding plumage. Piscivore; plunge-dives into clear river water. Near Threatened due to river sand-mining and disturbance.