Common gull or sea mew (Mòng bể đầu trắng, Larus canus)

The common gull (Larus canus) is a gull that breeds in cool temperate regions of the Palearctic from Iceland and Scotland east to Kamchatka in the Russian Far East.
Most common gulls migrate south in winter: the Mediterranean Sea, the southern Caspian Sea, and the seas around China and Japan.

Charadriiformes, Charadriidae, Charadrius: Late Latin word for a yellowish bird mentioned in the fourth-century Vulgate; from Ancient Greek kharadrios a bird found in ravines and river valleys (kharadra, "ravine").

Laridae:from Ancient Greek laros or Latin larus, which appears to have referred to a gull or other large seabird.

The genus name Larus is from Ancient Greek laros or Latin larus, which appears to have referred to a gull or other large seabird.

In Latin, canus (adjective) means grey, hoary, white, or grizzled, often referring to hair, snow, or frost, and is associated with old age and wisdom. It stems from Proto-Italic kaznos and refers to a grayish-white color.