Black-tailed Gull vs Kerguelen Tern
Larus crassirostris से तुलना Sterna virgata
Side-by-Side Comparison
| विशेषता | Black-tailed Gull | Kerguelen Tern |
|---|---|---|
| वैज्ञानिक नाम | Larus crassirostris | Sterna virgata |
| गण | Charadriiformes | Charadriiformes |
| कुल | Laridae | Laridae |
| संरक्षण स्थिति | Least Concern | Near Threatened |
| लंबाई | — | — |
| पंखों का फैलाव | 72.8 cm (28.7 in) | 50.0 cm (19.7 in) |
| वजन | 675.0 g (23.81 oz) | 127.5 g (4.50 oz) |
| आहार | -- | -- |
| अंडों की संख्या | 2-3 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
संरक्षण स्थिति
Least Concern
Black-tailed Gull
Near Threatened
Kerguelen 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.
Kerguelen Tern
Kerguelen Tern, 31–33 cm, is restricted to a handful of sub-Antarctic islands including Kerguelen and Crozet. Darker grey than Antarctic Tern, with reddish bill. Piscivore and invertivore; forages in kelp beds and coastal waters. Near Threatened; small, isolated population vulnerable to introduced predators.