I have 2 bantam sumatra chicks and they are adorable. Eating, drinking, playing, romping, pooping, peeping normally. Thing is . . . one of them is going bald on his back and behind, but he still has his tail. They are about 3 weeks old and we have several other breeds of chicks housed with them, about 25 in all. None of the others are experiencing this baldness. He is acting perfectly healthy, no signs of illness. Though no sign of feathers growing back at all. He looks like he's been waxed, really. I was just wondering if this could be a possible gene defect in the bantam sumatra breed.