Black-tailed Gull vs Royal Tern
Larus crassirostris comparé à Thalasseus maximus
Side-by-Side Comparison
| Attribut | Black-tailed Gull | Royal Tern |
|---|---|---|
| Nom scientifique | Larus crassirostris | Thalasseus maximus |
| Ordre | Charadriiformes | Charadriiformes |
| Famille | Laridae | Laridae |
| Statut de conservation | Least Concern | Least Concern |
| Longueur | — | — |
| Envergure | 72,8 cm (28.7 in) | 72,7 cm (28.6 in) |
| Poids | 675,0 g (23.81 oz) | 402,3333333333333 g (14.19 oz) |
| Régime alimentaire | -- | -- |
| Taille de la couvée | 2-3 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Statut de conservation
Least Concern
Black-tailed Gull
Least Concern
Royal 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.
Royal Tern
Royal Tern, 45–50 cm, is a large, powerful tern of American and West African coasts. Orange bill, shaggy black crest (full only briefly in spring), pale grey mantle. Piscivore; plunge-dives from 10 m for mullet and menhaden. Nests in dense colonies; often seen loafing on beaches year-round.