Andean Gull vs Kerguelen Tern
Larus serranus compared with Sterna virgata
Side-by-Side Comparison
| Attribute | Andean Gull | Kerguelen Tern |
|---|---|---|
| Scientific Name | Larus serranus | Sterna virgata |
| Order | Charadriiformes | Charadriiformes |
| Family | Laridae | Laridae |
| Conservation Status | Least Concern | Near Threatened |
| Length | — | — |
| Wingspan | 70.6 cm (27.8 in) | 50.0 cm (19.7 in) |
| Weight | 478.0 g (16.86 oz) | 127.5 g (4.50 oz) |
| Diet | -- | -- |
| Clutch Size | 1-4 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Andean Gull
Near Threatened
Kerguelen 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.
Kerguelen Tern
Kerguelen Tern, 31–33 cm, is restricted to a handful of sub-Antarctic islands including Kerguelen and Crozet. Darker grey than Antarctic Tern, with reddish bill. Piscivore and invertivore; forages in kelp beds and coastal waters. Near Threatened; small, isolated population vulnerable to introduced predators.