I live in Portland OR /Vancouver WA metro area. I've got the indoor run and coop covered with sand and pine shavings - all is good there and those work great. My question is about the outdoor run/play area for my hens. They are not out there all day long but only when we are home. I think pine shavings will get too mushy and I wanted something to prevent the outdoor run, which was grass, from getting all muddy. It is a flat surface and no indication of drainage problems. Just gets "squishy" during heavy rains. I was planning to get a couple bales of straw today to lay out...since I have the day off work and can get it all done today. My hens are now 5 months old and starting to lay....I wanted something to keep their feet drier and up from mud and any standing water. Will straw bales be alright for this?