1 Февраля 2017
Black-tailed gull | Larus crassirostris.
The black-tailed gull is medium-sized (46 cm), with a wingspan of 126–128 cm. It has yellow legs and a red and black spot at the end of the bill. This gull takes four years to reach full adult plumage. As the name suggests, it has a black tail. The bird has a cat-like call, giving it its Japanese name — umineko, "sea cat", and Korean name — gwaeng-yi gull, which means "cat" gull.