Anser Anser, commonly known as the greylag goose, has a wide range of synonyms that describe its features and characteristics. Some of these include the gray goose, the common wild goose, and the European goose. The term "Anser Anser" originates from Latin, where "anser" means goose. The greylag goose is a water bird often found in the northern hemisphere and can be identified by its large size, gray plumage, and long neck. Other synonyms for the greylag goose include the barnacle goose, the Canada goose, and the snow goose, with each referring to distinct subspecies. These synonyms give insight into the various types and traits of geese that exist around the world.