Waterfowl decoy with stabilizing buoyancy attachment

Provided is a waterfowl decoy that includes a suction bottom main body in combination with a removable keel. The main body includes extensions on the bottom that are within the cavity, and the keel includes corresponding slots to slideably engage the extensions. The keel also includes a hollow ballast section with an opening for insertion of desired ballast material. The keel is brought into contact with the bottom of the main body and the extensions are slid into the slots. This invention allows for quick, selectable attachment or removal of the keel in the field. The keel also includes a structure for the attachment and wrapping of an anchor cord.