"This is the story of Rusty, a mallard duck who lives in the Hudson River at Half Moon Bay Marina in Croton-on-Hudson, New York. The ducks at Half Moon Bay are a reminder to boaters that we must live in harmony with nature. Each year ducks return to the Marina with their ducklings. Those adults who were raised in the shadow of the boats return to the boats where friendly sailors share with them and appreciate their beauty."--P.  of cover.