"Bird Cloud" is the name the author gave to 640 acres of Wyoming wetlands and prairie and four hundred foot cliffs plunging down to the North Platte River. On the day she first visited, a cloud in the shape of a bird hung in the evening sky. She also saw pelicans, bald eagles, golden eagles, great blue herons, ravens, scores of bluebirds, harriers, kestrels, elk, deer and a dozen antelope. She fell in love with the land, then owned by the Nature Conservancy,...