Brown-headed Gull vs Black-billed Gull
Larus brunnicephalus comparé à Larus bulleri
Side-by-Side Comparison
| Attribut | Brown-headed Gull | Black-billed Gull |
|---|---|---|
| Nom scientifique | Larus brunnicephalus | Larus bulleri |
| Ordre | Charadriiformes | Charadriiformes |
| Famille | Laridae | Laridae |
| Statut de conservation | Least Concern | Near Threatened |
| Longueur | — | — |
| Envergure | 66,8 cm (26.3 in) | 57,5 cm (22.6 in) |
| Poids | 584,0 g (20.60 oz) | 216,83333333333334 g (7.65 oz) |
| Régime alimentaire | -- | -- |
| Taille de la couvée | 1-4 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Habitats partagés
Brown-headed Gull only
Aucun(e)
Black-billed Gull only
Aucun(e)
Statut de conservation
Least Concern
Brown-headed Gull
Near Threatened
Black-billed Gull
About These Birds
Brown-headed Gull
Brown-headed Gull, 41–46 cm, breeds at high-altitude Tibetan lakes and Central Asian wetlands, wintering on coasts from India to Southeast Asia. Brown hood in breeding plumage; white wing mirrors. Piscivore and invertivore; follows fishing activity in coastal bays.
Black-billed Gull
Black-billed Gull, 35–38 cm, is endemic to New Zealand, breeding on South Island braided riverbeds. All-white plumage with a slender black bill and black-tipped wings. Endangered; river modification and mammal predation depress breeding success. Insectivore and piscivore in river and coastal habitats.