We have a 4 black copper maran chicks, and they are all supposed to be the same age, we got them in trade for a buff orphington. The lady said a month but they are all kind of varying in size. Any Who. The largest chick has big lumps around the feather follicles on its feet. We think this one is going to be a rooster, but we are concerned its an infection in the follicles. The smallest chick has pasty butt, shes so freaking tiny and has so much fluff left. What can we so to help get rid of it?