Pallas's gull (Mòng bể đầu đen lớn, Ichthyaetus ichthyaetus), also known as the great black-headed gull
earlier placed in the genus Larus.

Pallas's gull (Ichthyaetus ichthyaetus), also known as the great black-headed gull, is a large bird species.
This bird breeds from southern Russia to Mongolia. 
This species is migratory, wintering in the eastern Mediterranean, Arabia and India. 

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 is a scientific taxonomic family name for gulls, terns, and skimmers, originating from the New Latin Larus (gull or seabird) combined with the suffix -idae (indicating a zoological family). The root Larus is derived from the Ancient Greek word λάρος (laros), which referred to a ravenous seabird or gull. 

The genus name is from Ancient Greek ikhthus, "fish", and aetos, "eagle".  The name refers to the fish-eating habits of these birds. They were previously included in the genus Larus.

The scientific name is from Ancient Greek: Ichthyaetus is from ikhthus, "fish", and aetos, "eagle".