I am not sure what the problem is but I have two 13-month-old Aracanas in my flock that are missing their feathers on their bottoms and have bloody white crust on their bottoms. I isolated them as I saw another chicken pecking their bottoms. I am guessing that is where the blood is from as they aren't bleeding anymore. I washed their bottoms and put on an antibiotic lotion. They are eating and drinking. One is still laying. should I be worried? What should I do? I am feeding them layer ration and water. They have free choice of scratch and oyster shell.