The dimensions are quite large, weigh from 2 to 6 kg. The gray goose got its name due to its plumage - grayish-brown with a wavy pattern on the neck and belly. The feathers of the wings are bordered in white. The brightest gray goose is colored in the winter and spring periods of life. The relatively tall pink legs are more suitable for walking than swimming. The beak is massive, pinkish or orange, thick at the base. The base of the beak is surrounded by a very narrow white strip. The plumage of gander and geese is the same, but gander is always much larger.
It prefers reservoirs with standing water, surrounded by reeds - swamps, lakes.
Much sloppy, suits his goose in a thicket of reed or sedge from grass and moss, with a lining of down. In clutch 5-10 yellowish-white eggs. The female incubates them, both parents drive the chicks.
Goose feed mainly on land or in shallow water. Food is mainly plant-based: stems and leaves, tubers, seeds.