Swallow-tailed Gull vs Brown-headed Gull
Creagrus furcatus so với Larus brunnicephalus
Side-by-Side Comparison
| Thuộc Tính | Swallow-tailed Gull | Brown-headed Gull |
|---|---|---|
| Tên Khoa Học | Creagrus furcatus | Larus brunnicephalus |
| Bộ | Charadriiformes | Charadriiformes |
| Họ | Laridae | Laridae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 81,8 cm (32.2 in) | 66,8 cm (26.3 in) |
| Khối Lượng | 695,0 g (24.52 oz) | 584,0 g (20.60 oz) |
| Chế Độ Ăn | -- | -- |
| Số Trứng | 1 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Tình Trạng Bảo Tồn
Least Concern
Swallow-tailed Gull
Least Concern
Brown-headed Gull
About These Birds
Swallow-tailed Gull
Swallow-tailed Gull, 55–60 cm, is the world's only fully nocturnal gull, breeding on the Galápagos Islands and roosting on the Humboldt Current. Distinctive red orbital ring, black-and-white head, deeply forked tail. Feeds at sea at night on squid and fish attracted to surface by bioluminescence.
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.