Book excerpt: Once upon a time there were two geese called Mr and Mrs Plumpster. Each Spring they returned to the marshes of their ancestors, and Mrs Plumpster laid her eggs. Soon six fine young Plumpsters hatched: Archie, Freda, Jennifer, Oswald, Timothy and Borka. But Borka was different. Borka had no feathers and could not fly. When winter came the other geese flew off in search of warmer climates, leaving Borka all alone. But her adventure was only just beginning . . .