I swear I saw a link to some sort of poop chart here somewhere the other day, but now, for the life of me, I can't find it. My chickies poops are a pretty uniform tan / brown, and semi-form. A bit like soft serve ice cream, only way grosser Is this too loose? I did see one foamy poop yesterday, I have been checking and haven't seen any more, but.. is this okay? Is this something I should be very concerned about? Thanks!