The autumn leaves are changing color and falling to the ground. But that is not the only sign that Autumn is here. The Chipmunks are busy! They hibernate in their underground homes for the winter. Now you can see them filling their cheeks with seeds and nuts which they take down to their lairs to eat in the winter. Apparently they store enough for several winters! Always good to be prepared. Autumn is when they get really serious about getting their food in .