Olrog's Gull vs Andean Gull
Larus atlanticus compared with Larus serranus
Side-by-Side Comparison
| Attribute | Olrog's Gull | Andean Gull |
|---|---|---|
| Scientific Name | Larus atlanticus | Larus serranus |
| Order | Charadriiformes | Charadriiformes |
| Family | Laridae | Laridae |
| Conservation Status | Near Threatened | Least Concern |
| Length | — | — |
| Wingspan | 78.3 cm (30.8 in) | 70.6 cm (27.8 in) |
| Weight | 850.0 g (29.98 oz) | 478.0 g (16.86 oz) |
| Diet | -- | -- |
| Clutch Size | -- | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Near Threatened
Olrog's Gull
Least Concern
Andean Gull
About These Birds
Olrog's Gull
Olrog's Gull, 55–58 cm, is an Endangered South American gull breeding in small colonies in Buenos Aires Province, Argentina. Very similar to Belcher's Gull. Piscivore; entirely dependent on mudflats and estuaries of the Buenos Aires coast. Threatened by industrial development of breeding and foraging sites.
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.