Forgot to mention one of the things we addressed after the site selection for our coop and run a couple years ago was the drainage. Southeastern Ohio is hilly, and gets a fair amount of rain, especially this year. The water was streaming into the run and pooling in the low spots, and of course, the girls treated it like their own personal mud spa. So we regouped this spring and graded the area with some builders sand left over from a patio project, added the roof and hung retractible sun shade material on the sides. We can flip up the sun shade on nice days for increased ventilation. The sun shade is not waterproof, but deflects the rain and snow well enough to keep the run dry. We have been working with this arrangement since early spring and so far so good, even with one of the rainiest summers on record. Yeah, chickens can be hard sometimes and probably more work to keep them clean and healthy than you might anticipate at the start. We love 'em though and they are a satisfying part of our lives.