Black-tailed Gull vs West African Crested Tern
Larus crassirostris مقارنةً بـ Thalasseus albididorsalis
Side-by-Side Comparison
| السمة | Black-tailed Gull | West African Crested Tern |
|---|---|---|
| الاسم العلمي | Larus crassirostris | Thalasseus albididorsalis |
| الرتبة | Charadriiformes | Charadriiformes |
| الفصيلة | Laridae | Laridae |
| حالة الحفاظ | Least Concern | Not Evaluated |
| الطول | — | — |
| طول الجناح | 72,8 cm (28.7 in) | — |
| الوزن | 675,0 g (23.81 oz) | 380,0 g (13.40 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 2-3 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
Least Concern
Black-tailed Gull
Not Evaluated
West African Crested Tern
About These Birds
Black-tailed Gull
Black-tailed Gull, 44–48 cm, is common on East Asian coasts from Russia to China, Japan, and Korea. Grey mantle, white body, yellow bill with red spot and black subterminal band, yellow legs. Omnivore; very vocal, known as the 'cat gull' for its mewing calls. Migratory; winters south to Vietnam.
West African Crested Tern
West African Crested Tern, 42–45 cm, breeds on Atlantic islands from Mauritania to Angola. Pale grey back, orange bill, black crest. Piscivore; forages along the rich upwelling zone off West Africa. Recently split from Lesser Crested Tern. Coastal and offshore forager in tropical waters.