This might sound ridiculous but we do landscaping and I told my husband to bring home cut grass instead of buying hay. Well we changed out the coup............it's so clean and nice but the chickens are MAD! They first evening they wouldn't get off the roosts and there was still light and yesterday they changed didn't lay up on top of the coup where they always do, they laid them on the FLOOR (on the grass). They do like to make little nests actually, may be grass isn't so good for that? It's not that thin either.