Heermann's Gull vs Saunders's Gull
Larus heermanni so với Saundersilarus saundersi
Side-by-Side Comparison
| Thuộc Tính | Heermann's Gull | Saunders's Gull |
|---|---|---|
| Tên Khoa Học | Larus heermanni | Saundersilarus saundersi |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Laridae | Laridae |
| Tình Trạng Bảo Tồn | Near Threatened | Vulnerable |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 67,2 cm (26.5 in) | 54,8 cm (21.6 in) |
| Khối Lượng | 448,26666666666665 g (15.81 oz) | 195,0 g (6.88 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1-2 | 1-6 |
| Population Trend | — | — |
Habitat Comparison
Tình Trạng Bảo Tồn
Near Threatened
Heermann's Gull
Vulnerable
Saunders's Gull
About These Birds
Heermann's Gull
Heermann's Gull, 46–51 cm, is distinctive — dark grey body, white head (breeding), red bill. Breeds almost entirely on Isla Rasa in the Gulf of California, then disperses north along the Pacific coast to British Columbia. Kleptoparasite; steals fish from Brown Pelicans. Near Threatened; range highly restricted.
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.