Black-tailed Gull vs Glaucous-winged Gull
Larus crassirostris comparé à Larus glaucescens
Side-by-Side Comparison
| Attribut | Black-tailed Gull | Glaucous-winged Gull |
|---|---|---|
| Nom scientifique | Larus crassirostris | Larus glaucescens |
| Ordre | Charadriiformes | Charadriiformes |
| Famille | Laridae | Laridae |
| Statut de conservation | Least Concern | Least Concern |
| Longueur | — | — |
| Envergure | 72,8 cm (28.7 in) | 82,4 cm (32.4 in) |
| Poids | 675,0 g (23.81 oz) | 1095,0166666666667 g (38.63 oz) |
| Régime alimentaire | -- | -- |
| Taille de la couvée | 2-3 | 1-6 |
| Population Trend | — | — |
Habitat Comparison
Statut de conservation
Least Concern
Black-tailed Gull
Least Concern
Glaucous-winged 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.
Glaucous-winged Gull
Glaucous-winged Gull, 56–68 cm, is the common large gull of the North Pacific from Alaska to California. Distinctive pale grey wing tips (not black) give a uniform grey appearance. Omnivore; forages on rocky shores and at harbours. Hybridises with Western, Herring, and Glaucous Gulls.