drive shaft disengages from a cam located on the decoy head thereby allowing the head to accelerate and plunge quickly into the water this action simultaneously causes the rear of the decoy to rotate to a vertical orientation the head pauses under water until the drive cam re engages the head cam at the bottom point of the rotation and continues to rotate the head through a channel in the body this redistribution of weight causes the body to return to a horizontal position the head rotation continues to the apex and the cycle repeats this motion also disturbs the surface of the water surrounding the decoy which can impart motion to adjacent static waterfowl decoys application_number US 201313826684 A description in the following descriptions the present invention will be explained with reference to various example embodiments nevertheless these embodiments are not intended to limit the present invention to any specific example environment application or particular implementation described herein therefore descriptions of these example embodiments are only provided for purpose of illustration rather than to limit the present invention it is understood that the features mentioned hereinbefore and those to be commented on hereinafter may be used not only in the specified combinations but also in other combinations or in isolation without departing from the scope of the present invention the decoy according to certain embodiments.