Black-tailed Gull vs Fairy Tern
Larus crassirostris เปรียบเทียบกับ Sternula nereis
Side-by-Side Comparison
| คุณสมบัติ | Black-tailed Gull | Fairy Tern |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Larus crassirostris | Sternula nereis |
| อันดับ | Charadriiformes | Charadriiformes |
| วงศ์ตระกูล | Laridae | Laridae |
| สถานะการอนุรักษ์ | Least Concern | Vulnerable |
| ความยาว | — | — |
| กว้างปีก | 72.8 cm (28.7 in) | 35.6 cm (14.0 in) |
| น้ำหนัก | 675.0 g (23.81 oz) | 68.5 g (2.42 oz) |
| อาหาร | -- | -- |
| จำนวนไข่ | 2-3 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
สถานะการอนุรักษ์
Least Concern
Black-tailed Gull
Vulnerable
Fairy 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.
Fairy Tern
Fairy Tern, 22–25 cm, breeds in southern Australia, New Zealand, and New Caledonia on sandy beaches. White and pale grey with an orange-yellow bill; delicate and buoyant in flight. Piscivore; hovers and plunge-dives in shallow coastal and estuarine waters. Vulnerable due to beach disturbance.