Black-tailed Gull vs White-fronted Tern
Larus crassirostris เปรียบเทียบกับ Sterna striata
Side-by-Side Comparison
| คุณสมบัติ | Black-tailed Gull | White-fronted Tern |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Larus crassirostris | Sterna striata |
| อันดับ | Charadriiformes | Charadriiformes |
| วงศ์ตระกูล | Laridae | Laridae |
| สถานะการอนุรักษ์ | Least Concern | Near Threatened |
| ความยาว | — | — |
| กว้างปีก | 72.8 cm (28.7 in) | 54.8 cm (21.6 in) |
| น้ำหนัก | 675.0 g (23.81 oz) | 131.5 g (4.64 oz) |
| อาหาร | -- | -- |
| จำนวนไข่ | 2-3 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
สถานะการอนุรักษ์
Least Concern
Black-tailed Gull
Near Threatened
White-fronted 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.
White-fronted Tern
White-fronted Tern, 35–43 cm, is New Zealand's most common tern, breeding on coastal and riverine sites throughout the islands. White forehead contrasts with black cap; orange-red bill. Piscivore; hovers and plunge-dives in coastal waters and off river mouths. Winters on Australian coasts.