Correspondent, Tom Wilmer reports from Gibbon, Nebraska where he visits with Bill Taddicken, Director of the Iain Nicolson Audubon Center Rowe Sanctuary on the outskirts of Kearney , Nebraska. Every year, like clockwork, from late February through early April, more 500,000 Sandhill Cranes descend on Nebraska’s Platte River Valley during their annual northbound migration to Canada and the Arctic tundra. The Crane is one of the world’s oldest and most revered bird species. Nine million-year-old