Andean Gull vs Black Skimmer
Larus serranus เปรียบเทียบกับ Rynchops niger
Side-by-Side Comparison
| คุณสมบัติ | Andean Gull | Black Skimmer |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Larus serranus | Rynchops niger |
| อันดับ | Charadriiformes | Charadriiformes |
| วงศ์ตระกูล | Laridae | Laridae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 70.6 cm (27.8 in) | 73.1 cm (28.8 in) |
| น้ำหนัก | 478.0 g (16.86 oz) | 293.6666666666667 g (10.36 oz) |
| อาหาร | -- | -- |
| จำนวนไข่ | 1-4 | 1-6 |
| Population Trend | — | — |
Habitat Comparison
สถานะการอนุรักษ์
Least Concern
Andean Gull
Least Concern
Black Skimmer
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.
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.