Our hens are in a run that is mostly soil with a little area of rocks. Coming into the wet winter months here I'm realising how messy this will be not only for me going in and out to feed, water & chill out with them but also for their little feet! What is a good type of ground cover for a run which doesn't turn into a miry, mucky, mess in wet weather (we live in Northern Ireland so in the winter we would get rain instead of snow!) Would I be smart to put small stones down? Wood chip? or just leave the soil...and risk ending up on my backside!