Stuck Duck

The past couple days have been very harsh and a new problem has cropped up: stuck ducks.  For the second night in a row an unlucky duck has gotten froze stuck to the ground after an evening swim in the water bucket.  I am surprised I have not had this problem before as the setup has not changed.  One of the reasons I like waterfowl is that they are not afraid to go outside during winter, even heavy snow, as long as it is not Snowpocalypse ridiculous.  Chickens will usually hide inside the coop only quickly running outside for a quick snack.  I do not keep water and food inside the coop because the waterfowl will make a huge mess.