Andean Gull vs Kerguelen Tern
Larus serranus مقارنةً بـ Sterna virgata
Side-by-Side Comparison
| السمة | Andean Gull | Kerguelen Tern |
|---|---|---|
| الاسم العلمي | Larus serranus | Sterna virgata |
| الرتبة | Charadriiformes | Charadriiformes |
| الفصيلة | Laridae | Laridae |
| حالة الحفاظ | Least Concern | Near Threatened |
| الطول | — | — |
| طول الجناح | 70,6 cm (27.8 in) | 50,0 cm (19.7 in) |
| الوزن | 478,0 g (16.86 oz) | 127,5 g (4.50 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1-4 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
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.