One of our chicks (about five weeks old) is having a problem. The chicks are in that stage where they are losing their down feathers but their big chick feathers haven't all come in yet. One of the chicks has a weird looking sore at the base of its tail. We think it might be an impacted feather that won't come out. It almost looks like a blood filled pimple or something, but you can kind of see the tip of a feather in it. The area around it is swollen and seems to be sore to the touch. We are not sure what - if anything - we should do. We are trying bantams for the first time this year. We believe this particular chick may be a silver-laced Polish bantam. I have tried to take pictures. Any help would be appreciated.