Black-tailed Gull vs Elegant Tern
Larus crassirostris مقارنةً بـ Thalasseus elegans
Side-by-Side Comparison
| السمة | Black-tailed Gull | Elegant Tern |
|---|---|---|
| الاسم العلمي | Larus crassirostris | Thalasseus elegans |
| الرتبة | Charadriiformes | Charadriiformes |
| الفصيلة | Laridae | Laridae |
| حالة الحفاظ | Least Concern | Near Threatened |
| الطول | — | — |
| طول الجناح | 72,8 cm (28.7 in) | 59,3 cm (23.3 in) |
| الوزن | 675,0 g (23.81 oz) | 236,16666666666666 g (8.33 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 2-3 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
Least Concern
Black-tailed Gull
Near Threatened
Elegant 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.
Elegant Tern
Elegant Tern, 39–43 cm, breeds in a few large colonies on islands off Baja California and winters along Pacific coasts of South America. Long, drooping orange bill, shaggy black crest. Piscivore; dependent on Northern Anchovy and Pacific Sardine. Near Threatened; highly colonial breeder.