I'm not sure what is going on? About 2-3 weeks ago I noticed a few of my chickens had caked on poopy butts. I washed everyone but they are still having runny poops. They are eating and drinking well but one seems a little thinner I think. They are acting fine. There is also dried blood on some of the eggs here and there. They are 9 months old and have been laying for 4 months or so. They are just eating 16% crumble with oyster shells mixed in and treats like yogurt and rice and other goodies. They have been pretty much stuck in their coop since it has been so cold. Not sure what I can do or if they are even sick? The poop seem watery sometimes because it looks like it freezes on their tail feathers. I just make sure their butts are kept clean so they can poop but I just wonder what is going on?