We are new to the chicken world and our three 11-week-old barred rock chicks have been the picture of health since we got them at 2 1/2 weeks. They are on starter feed, get a snack (I'm pretty conservative about what they get) at 4 p.m. and some scratch when they go to bed. Today when I gave them their snack I noticed two things. The first is that two of them ( I think; it could have been the same one pooping twice) pooped in front of me, producing watery poops. The second is that two of them ( I don't know whether they were the same ones) have a prominence sticking out in front. I poked at them through the fence and they felt like bone. They are also shedding feathers and I hope it is a normal warm-weather moult. They act perfectly normal. Could they be sick? Do they change shape at this age and have a bony protruberence for a while? The person who puts them to bed picks them up and checks them out each night. I've asked him to assess whether they feel like they've lost weight. I know birds will hide their illnesses as long as they can and I want to be on top of it. We'd be sad if our little girls suddenly died because we didn't notice early signs. Any help is appreciated.