I have some silkie pullets and 2 or 3 little Silkie roos in together, till I get some sold, and they are reaching maturity. Roos are mounting the pullets, and I have gotten an egg or 2 every day or so. Now, some of the pullets have a messy grey stuff clotting up a few of the feathers directly below their vent. I see no reason for them to have diahrrea, and I am wondering if this is something the roo is depositing on them--perhaps he isn't exactly "hitting the mark" or maybe is dirtying a little bit as he breeds them. (not meaning to be indelicate). Anyone have any thoughts on this? If they are all getting the "scours" I want to do something, but it doesn't really seem like it is "poo".