I have a BO that I've been noticing what I think is a problem. I've noticed in the coop every morning, under the roost, the line of poop from everybody I've noticed most is normal. One spot it's sorta sprayed in the sand. I don't see this every morning but the poop outside from someone is loose. I have to assume it's the same pullet. I see now the guilty one has a very thin streak of poop down her backside feathers. Any idea what my problem is?