Loon LessonsThe nature of the common loon, from biology to behavior, from one of the worlds foremost observers of the revered waterbird Even those who know the loons call might not recognize it as a tremolo, yodel, or wail, and may not understand what each call means, how its made, and why. And those who marvel at the loons diving prowess might wonder why this bird has such skill, or where loons go when they must leave northern lakes in winter. For these and so