Chipmunks may have to dig through a metre of snow to leave their burrows in spring.
Physiology
The Eastern chipmunk looks a lot like a small, striped, reddish-brown squirrel with a white
belly. Some squirrels do have stripes, but chipmunks have five dark stripes and several
white ones, some of which stretch onto the head. Male and female chipmunks look alike.
These rodents' front feet have four toes. The back ones have five.
Chipmunk cheek pouches are made of stretchy skin so the animal can stuff them with food
— a handy way to carry lots of goodies off to its burrow. The pouches get larger as the
chipmunk gets older.
Eastern chipmunks are at home in forests where there are plenty of hiding spots, such as
under rocks or in fallen trees. This cover helps the critter escape its predators.
These animals will eat fruits, nuts, seeds and mushrooms - sometimes even bird eggs and
earthworms.
Each chipmunk builds a burrow where it may live for up to several years. Chipmunks mostly
stay away from each other's homes. Its tiny burrow is also a place to hide from predators.
To make its burrow, the chipmunk digs a tunnel and fills the space with fluffy seeds, leaves
and grasses. Underneath this bedding, it hides nuts and seeds for winter. That can help
the nuts and seeds it does not eat grow into plants.
During winter, chipmunks mostly stay in their burrows. They wake up every few days or weeks
to snack from their stored food. That means they don't hibernate.
In spring or summer, a female chipmunk gives birth to an average of three to five babies,
which have no fur, are blind and weigh only about three grams! They will venture out of
the burrow after about six weeks.
Range
The Eastern chipmunk is common in southeastern Canada and the northeastern
United States. They reach as far north as the treeline, where it is too cold and
dark for forests to grow.
Each critter also has its own range. When in another's territory, a chipmunk will be wary.
Chipmunks don't always get along when vying for the nuts humans are passing out!