Shadows passing across the moon, a soft beating of unseen wings in the dark, distant cries blown back by the wind, a line of geese flying high these are some of the familiar fragments that are part of the mystery of migration. Waterfowl, shorebirds and cranes are linked by a love of water. Since the Ice Age retreated, arctic nesting birds have travelled immense distances every fall to overwinter and every spring to return. Their passage marks the seasons and is a mystery that still fascinates man.
