Black-tailed Gull vs Greater Crested Tern
Larus crassirostris verglichen mit Thalasseus bergii
Side-by-Side Comparison
| Merkmal | Black-tailed Gull | Greater Crested Tern |
|---|---|---|
| Wissenschaftlicher Name | Larus crassirostris | Thalasseus bergii |
| Ordnung | Charadriiformes | Charadriiformes |
| Familie | Laridae | Laridae |
| Erhaltungsstatus | Least Concern | Least Concern |
| Länge | — | — |
| Flügelspannweite | 72,8 cm (28.7 in) | 71,6 cm (28.2 in) |
| Gewicht | 675,0 g (23.81 oz) | 367,75 g (12.97 oz) |
| Ernährung | -- | -- |
| Gelegegröße | 2-3 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Erhaltungsstatus
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.