Later, the Romans made January the first month of the year. In 46 B.C., the Roman statesman Julius Caesar added a day to January, making it 31 days long. The Anglo-Saxons called the first month Wolfmonth because wolves came into the villages in winter in search of food. In the northern half of the world, January is usually the coldest month of the year. Nature is quiet.
Birds travel less, and such animals as bears and woodchucks sleep both day and night.
Plants rest in preparation for the next growing season. In the southern half of the world, January is usually the warmest month of the year. Plants grow and animals are active. Nature is quiet. Birds travel less, and such animals as bears and woodchucks sleep both day and night.