Black-billed Gull vs Saunders's Gull
Larus bulleri مقارنةً بـ Saundersilarus saundersi
Side-by-Side Comparison
| السمة | Black-billed Gull | Saunders's Gull |
|---|---|---|
| الاسم العلمي | Larus bulleri | Saundersilarus saundersi |
| الرتبة | Charadriiformes | Charadriiformes |
| الفصيلة | Laridae | Laridae |
| حالة الحفاظ | Near Threatened | Vulnerable |
| الطول | — | — |
| طول الجناح | 57,5 cm (22.6 in) | 54,8 cm (21.6 in) |
| الوزن | 216,83333333333334 g (7.65 oz) | 195,0 g (6.88 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1-3 | 1-6 |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
Near Threatened
Black-billed Gull
Vulnerable
Saunders's Gull
About These Birds
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.
Saunders's Gull
Saunders's Gull, 29–32 cm, is a Vulnerable gull breeding in coastal saltmarshes of China and Korea, wintering along East Asian coasts to Vietnam. Black hood in breeding plumage, white wing-tip mirrors. Feeds on crustaceans and invertebrates in tidal mudflats. Threatened by reclamation of Yellow Sea tidal flats.