6 buff orps, 19 days old, used paper towels as bedding for 4 days, added shavings 3 days ago, tried earlier but they went crazy with the stuff, now yellow kind of frothy poop, reminds me of foam insulation, could this been worms too? Using birch/pine shavings, I think my neighbor used the same stuff, (same batch of shavings) could it be worms from the shavings? I don't think we had this before shavings. Help! First time raising my own.