Black-tailed Gull vs Bonaparte's Gull
Larus crassirostris comparé à Larus philadelphia
Side-by-Side Comparison
| Attribut | Black-tailed Gull | Bonaparte's Gull |
|---|---|---|
| Nom scientifique | Larus crassirostris | Larus philadelphia |
| Ordre | Charadriiformes | Charadriiformes |
| Famille | Laridae | Laridae |
| Statut de conservation | Least Concern | Least Concern |
| Longueur | — | — |
| Envergure | 72,8 cm (28.7 in) | 51,9 cm (20.4 in) |
| Poids | 675,0 g (23.81 oz) | 204,575 g (7.22 oz) |
| Régime alimentaire | -- | -- |
| Taille de la couvée | 2-3 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Habitats partagés
Black-tailed Gull only
Aucun(e)
Bonaparte's Gull only
Statut de conservation
Least Concern
Black-tailed Gull
Least Concern
Bonaparte's Gull
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.
Bonaparte's Gull
Bonaparte's Gull, 28–30 cm, is North America's smallest Larus gull, breeding in boreal forests near lakes and wintering on both coasts. Breeding adult has a black hood; underwing shows white triangular flash. Planktivore and piscivore; buoyant, tern-like flight. Migratory; forms large winter flocks.