I have 5 cochins who will have a very nice 15'x8' run attached to their coop when it is all finished out. There is grass in part of the run area but I know with 5 sets of fluffy feet scratching it won't be there for long. I am wondering about what to put down in the run once the grass is gone so that they aren't just walking in mud after it rains? I would think it would really mess with them since they have all those feathers on their feet. I plan to use pine shavings in the coop, but outside on the ground wouldn't it hold moisture in and then begin to mold or rot? I was thinking a better choice may be those big chunky style nuggets of wood like you get to help with weed control in flower beds. Has anyone used those? If you put something down in your run what is it and why do you prefer what you use? Or perhaps am I just worrying needlessly and the mud won't bother the chickens anyway? TIA for any advice.