Atlantic White Tern vs Black-tailed Gull
Gygis alba в сравнении с Larus crassirostris
Side-by-Side Comparison
| Характеристика | Atlantic White Tern | Black-tailed Gull |
|---|---|---|
| Научное название | Gygis alba | Larus crassirostris |
| Отряд | Charadriiformes | Charadriiformes |
| Семейство | Laridae | Laridae |
| Охранный статус | Least Concern | Least Concern |
| Длина | — | — |
| Размах крыльев | 50,4 cm (19.8 in) | 72,8 cm (28.7 in) |
| Масса | 138,0 g (4.87 oz) | 675,0 g (23.81 oz) |
| Питание | -- | -- |
| Размер кладки | 1 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
Охранный статус
Least Concern
Atlantic White Tern
Least Concern
Black-tailed Gull
About These Birds
Atlantic White Tern
Atlantic White Tern: 28–33 cm, wingspan 76–87 cm, ethereally white seabird with blue-grey bill, blue orbital ring, and large dark eyes. Breeds on tropical Atlantic islands including Ascension and Saint Helena; related species widespread across the Indo-Pacific. Nests on bare branches with no nest material. Feeds on small fish near the surface.
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.