Black-tailed Gull vs Greater Crested Tern
Larus crassirostris в сравнении с Thalasseus bergii
Side-by-Side Comparison
| Характеристика | Black-tailed Gull | Greater Crested Tern |
|---|---|---|
| Научное название | Larus crassirostris | Thalasseus bergii |
| Отряд | Charadriiformes | Charadriiformes |
| Семейство | Laridae | Laridae |
| Охранный статус | Least Concern | Least Concern |
| Длина | — | — |
| Размах крыльев | 72,8 cm (28.7 in) | 71,6 cm (28.2 in) |
| Масса | 675,0 g (23.81 oz) | 367,75 g (12.97 oz) |
| Питание | -- | -- |
| Размер кладки | 2-3 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Охранный статус
Least Concern
Black-tailed Gull
Least Concern
Greater 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.
Greater Crested Tern
Greater Crested Tern, 43–48 cm, is the largest crested tern of the Indo-Pacific, breeding from South Africa to Japan and Australia. Yellow-green bill, prominent black crest, grey back. Colonial breeder on sand islands; plunge-dives for fish. Partially migratory; disperses across Indian and Pacific Oceans.