Three of my six hens have very loose stools, while the others have normal stools. This makes their butt feathers look discusting, but the main thing is that I'm wondering if they are sick. I feed them cracked corn and layer pellets and give them fresh water every day. I've had them for a month now and am using a deep litter method, I had to clean the coop today and put down new shavings, the coop had a heavy amonia smell, is this normal?
