As the oak tree blossoms, robins and squirrels begin to build their nests, bees fly in and out of their hive, and the tree comes to life.Not only is the oak a living thing itself, it is also a habitat for other living creatures that depend on it for nesting, food, and shelter.Readers follow the tree and its inhabitants through seasons of flowering, leafing and fruiting, the return to a deep winter sleep, and the springtime reawakening -- completing a cycle which has gone unbroken for more than one hundred years.