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(Perisoreus infaustas), a bird of the family Corvidae of the order Passeriformes. Its body length is 26–30 cm, and its weight, about 80 g. The feathers are brownish gray. The top of the head is dark brown, and the wings and tail are reddish. Siberian jays are distributed in the coniferous forests of northern Europe and Asia. In the USSR they are distributed from the western borders to the island of Sakhalin. The birds nest in April or May in trees. Three or four eggs are laid per clutch and are incubated for 16–17 days. The Siberian jay feeds on insects, berries, seeds, and small rodents. A closely related species, the Canada jay (P. canadensis), lives in North America.