As a boy growing up in North Dakota, Paul A. Johnsgard measured his winters not by conventional time units, but in the days it took for the snow geese to return from their wintering grounds to Lake Traverse. In this book he recounts the story of one year in the life of a pair of snow geese-the incubation and breeding of the young in the Arctic, their hazardous migration to winter quarters near the Gulf of Mexico, and the spring migration back to the Arctic.