I have 3 Rhode Islands about 3 months old, one looked lethargic today she didn't want to run around like the others and had a pale color around her eyes unlike the pink color of the others. I separated her by putting her in a large dog cage in my garage.I didn't see her poop yet but did look for her over a bit for anything unusual. I did notice some lost feathers in the coop today when cleaning it out. any advice?