Inca Tern vs Andean Gull
Larosterna inca compared with Larus serranus
Side-by-Side Comparison
| Attribute | Inca Tern | Andean Gull |
|---|---|---|
| Scientific Name | Larosterna inca | Larus serranus |
| Order | Charadriiformes | Charadriiformes |
| Family | Laridae | Laridae |
| Conservation Status | Near Threatened | Least Concern |
| Length | — | — |
| Wingspan | 55.4 cm (21.8 in) | 70.6 cm (27.8 in) |
| Weight | 199.5 g (7.04 oz) | 478.0 g (16.86 oz) |
| Diet | -- | -- |
| Clutch Size | 1-2 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Near Threatened
Inca Tern
Least Concern
Andean Gull
About These Birds
Inca Tern
Inca Tern, 39–42 cm, is unmistakable — dark slate grey with white facial plumes curling from the bill like a Victorian moustache. Restricted to the Humboldt Current from Peru to Chile. Piscivore; snatches anchovies and other prey at the surface. Near Threatened; population tied to anchovy availability.
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.