Bonaparte's Gull vs Saunders's Gull
Larus philadelphia so với Saundersilarus saundersi
Side-by-Side Comparison
| Thuộc Tính | Bonaparte's Gull | Saunders's Gull |
|---|---|---|
| Tên Khoa Học | Larus philadelphia | Saundersilarus saundersi |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Laridae | Laridae |
| Tình Trạng Bảo Tồn | Least Concern | Vulnerable |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 51,9 cm (20.4 in) | 54,8 cm (21.6 in) |
| Khối Lượng | 204,575 g (7.22 oz) | 195,0 g (6.88 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1-3 | 1-6 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Bonaparte's Gull only
Saunders's Gull only
Không
Tình Trạng Bảo Tồn
Least Concern
Bonaparte's Gull
Vulnerable
Saunders's Gull
About These Birds
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.
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.