Andean Gull vs Black-bellied Tern
Larus serranus مقارنةً بـ Sterna acuticauda
Side-by-Side Comparison
| السمة | Andean Gull | Black-bellied Tern |
|---|---|---|
| الاسم العلمي | Larus serranus | Sterna acuticauda |
| الرتبة | Charadriiformes | Charadriiformes |
| الفصيلة | Laridae | Laridae |
| حالة الحفاظ | Least Concern | Endangered |
| الطول | — | — |
| طول الجناح | 70,6 cm (27.8 in) | 44,8 cm (17.6 in) |
| الوزن | 478,0 g (16.86 oz) | 159,5 g (5.63 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1-4 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
Least Concern
Andean Gull
Endangered
Black-bellied 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.
Black-bellied Tern
Black-bellied Tern, 32–34 cm, is an Endangered freshwater tern of the Indian subcontinent, breeding on large river sandbars from Pakistan to Myanmar. Black belly contrasts with grey upperparts in breeding plumage; orange bill. Plunge-dives for small fish. Severely threatened by river modification.