Black-tailed Gull vs Sandwich Tern
Larus crassirostris เปรียบเทียบกับ Thalasseus sandvicensis
Side-by-Side Comparison
| คุณสมบัติ | Black-tailed Gull | Sandwich Tern |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Larus crassirostris | Thalasseus sandvicensis |
| อันดับ | Charadriiformes | Charadriiformes |
| วงศ์ตระกูล | Laridae | Laridae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 72.8 cm (28.7 in) | 57.7 cm (22.7 in) |
| น้ำหนัก | 675.0 g (23.81 oz) | 223.5 g (7.88 oz) |
| อาหาร | -- | -- |
| จำนวนไข่ | 2-3 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
สถานะการอนุรักษ์
Least Concern
Black-tailed Gull
Least Concern
Sandwich Tern
About These Birds
Black-tailed Gull
Black-tailed Gull, 44–48 cm, is common on East Asian coasts from Russia to China, Japan, and Korea. Grey mantle, white body, yellow bill with red spot and black subterminal band, yellow legs. Omnivore; very vocal, known as the 'cat gull' for its mewing calls. Migratory; winters south to Vietnam.
Sandwich Tern
Sandwich Tern, 36–41 cm, is a widespread coastal tern breeding from Western Europe and the Caspian Sea to the Caribbean. Black cap with shaggy crest, slender black bill with a yellow tip. Plunge-dives forcefully for sand eels and sprats. Strongly migratory; European birds winter to West Africa.