Black-tailed Gull vs Indian Skimmer
Larus crassirostris เปรียบเทียบกับ Rynchops albicollis
Side-by-Side Comparison
| คุณสมบัติ | Black-tailed Gull | Indian Skimmer |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Larus crassirostris | Rynchops albicollis |
| อันดับ | Charadriiformes | Charadriiformes |
| วงศ์ตระกูล | Laridae | Laridae |
| สถานะการอนุรักษ์ | Least Concern | Endangered |
| ความยาว | — | — |
| กว้างปีก | 72.8 cm (28.7 in) | 74.4 cm (29.3 in) |
| น้ำหนัก | 675.0 g (23.81 oz) | 164.0 g (5.78 oz) |
| อาหาร | -- | -- |
| จำนวนไข่ | 2-3 | 2-5 |
| Population Trend | — | — |
Habitat Comparison
สถานะการอนุรักษ์
Least Concern
Black-tailed Gull
Endangered
Indian Skimmer
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.
Indian Skimmer
Indian Skimmer: 38–43 cm, black-and-white skimmer with an orange-and-yellow bill and white collar. Resident on large sandy rivers of the Indian subcontinent. VU. Feeds by skimming river surface with protruding lower mandible to catch fish. Severely threatened by sand-mining, dam building, and human disturbance at nesting colonies.