Abstract: A waterfowl decoy having a keel for the production of automatic motion is provided. The waterfowl decoy comprises a body, a chest or forward facing region, a tail or rearward facing region, a ventral surface or downward facing region, and a keel affixed to the ventral surface of the waterfowl decoy. When submerged in water, Bernoulli forces act on the keel translating to the ventral surface and generating automatic motion in the waterfowl decoy.

Abstract: The instant invention is directed to shear thickening fluids which comprise a water swellable clay capable of rapidly forming a paste having a strength of at least 2000 lbs/100 ft.sup.2 upon interaction with the aqueous phase employed and present in sufficient concentration to form such a paste, a nonaqueous phase comprising a hydrocarbon material and surfactant, and an aqueous phase comprising water and a water-soluble polymer, wherein the clay and the aqueous phase are kept separated by the intervening hydrocarbon-surfactant phase. The intervening oil phase prevents the interaction between the water-polymer phase and the clay and results in a stable, non-reacting, pumpable composite, until such time as the oil barrier is ruptured by deliberate application of a sufficiently high shear force. Upon such rupture, the materials interact resulting in a semi-rigid high strength paste.