A motion decoy system that mimics a flock of birds swimming within a body of water includes a drive unit and a plurality of bird decoys the drive unit having a frame, a first line, a second line, a trolling motor, and a propeller. The plurality of bird decoys includes a first plurality of decoys pivotally connected to the first line, a second plurality of decoys pivotally connected to the second line, and a third plurality of decoys pivotally connected to the frame. The trolling motor is adjacently connected to the frame and, in conjunction with the propeller, drives the frame forward and backward the first line and the second line being adjacently connected to the frame opposite each other, wherein the first line and the second line trail the frame. The trolling motor is operated through a control unit that is electrically connected through the second line.
