Common Gull-billed Tern vs Saunders's Gull
Gelochelidon nilotica so với Saundersilarus saundersi
Side-by-Side Comparison
| Thuộc Tính | Common Gull-billed Tern | Saunders's Gull |
|---|---|---|
| Tên Khoa Học | Gelochelidon nilotica | Saundersilarus saundersi |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Laridae | Laridae |
| Tình Trạng Bảo Tồn | Least Concern | Vulnerable |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 61,6 cm (24.3 in) | 54,8 cm (21.6 in) |
| Khối Lượng | 214,075 g (7.55 oz) | 195,0 g (6.88 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1-3 | 1-6 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Common Gull-billed Tern only
Saunders's Gull only
Không
Tình Trạng Bảo Tồn
Least Concern
Common Gull-billed Tern
Vulnerable
Saunders's Gull
About These Birds
Common Gull-billed Tern
Common Gull-billed Tern, 35–38 cm, wingspan 76–86 cm, has a broad global range across Europe, Asia, the Americas, and Australia. Stout black bill adapted for catching crabs, insects, and small vertebrates — atypically terrestrial for a tern. Summers in marshes and steppes; winters on tropical coasts.
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.