Part autobiography, part natural history, Bird Cloud is the glorious story of Annie Proulx’s piece of the Wyoming landscape and her home there.“Bird Cloud” is the name Annie Proulx 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. Proulx also saw pelicans, bald eagles, golden eagles, great blue herons, ravens, scores of bl