siberian chipmunks usually live solitary lives, but during the winter they create a burrow, which they often share with another chipmunk. its burrow, which can be 2.5 m long and 1.5 m deep, consists of a nest chamber, several storage chambers and chambers for the waste. during this winter season, these chipmunks store 3–4 kg of food in order to survive underground until april or may. in addition to the pairing off during hibernation, they also use a complex voice communication system to interact. they have two vocal sounds, a fast, sharp sound for when they are frightened and a deep croak sound that is thought to be used for mating.