Andean Gull vs Snowy-crowned Tern
Larus serranus verglichen mit Sterna trudeaui
Side-by-Side Comparison
| Merkmal | Andean Gull | Snowy-crowned Tern |
|---|---|---|
| Wissenschaftlicher Name | Larus serranus | Sterna trudeaui |
| Ordnung | Charadriiformes | Charadriiformes |
| Familie | Laridae | Laridae |
| Erhaltungsstatus | Least Concern | Least Concern |
| Länge | — | — |
| Flügelspannweite | 70,6 cm (27.8 in) | 51,2 cm (20.2 in) |
| Gewicht | 478,0 g (16.86 oz) | 149,75 g (5.28 oz) |
| Ernährung | -- | -- |
| Gelegegröße | 1-4 | 2-4 |
| Population Trend | — | — |
Habitat Comparison
Erhaltungsstatus
Least Concern
Andean Gull
Least Concern
Snowy-crowned 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.
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.