Hi, my wife and I are new to "chicken world" So far we have four chicks,(2-whiteleghorn, 1-Barred Rock and a Sex-link. I am building a 4' x 4' coop tha will be on stilts. The big question I have is the run. We live next to Portland Oregon.Have lots of rain. Coop will be in part of Garden, which is muddy right now. Do we have to board up the sides of the run and put a roof on? If not, how will chickens handle the mud.(tracking in coop and so on). Is a "bad Weather" temporary sides and roof done at all? Any advice will be appreciated.