Hi I'm not sure what's going on with two of my chickens (I have 3 total - 2 red sex-links and 1 buff orpington). The 2 red sex-links are completely bare-bottomed, as if they snuck to the spa for Brazilian waxes. One of them is missing feathers around her tail as well, a little scabby but no blood. The buff orpington has all her feathers. Any ideas?