Offering 3 mallards.  The largest seems to be made of a hardened plastic.  The smaller two are hand made of wood.

Large - measures 12.5" x 6" x 5.5".  There appears to be a slight notch off one side of the tail feathers.  This one alone weighs almost 4 lbs.

Middle - measures 9.5" x 4" x 3.5".  Stamped Ducks Unlimited on the bottom and is signed.  Slight wear on the tail feather.

Small -  measures 8.5" x 4" x 4.5".   Hand made of black walnut and is signed and dated on the bottom.  Slight wear on the edge of the bill.  Weathering of the finish.