There is this large swollen lump at the base of Baby's tail. It looks for all the world like an ingrown feather. The red lump thing on top is about a quarter inch, which is on top of a quarter SIZED half inch tall lump. There is nothing you can express from the red lump, as you would a ingrown hair, it is as hard as a rock. I can't even get the skin off to see of there is a feather shaft. If we can find no solution, we will be culling him. He is a double frizzle, and has all kinds of feather/skin problems. It is constantly an issue. Please Help!! Also, he is a banty. A quarter sized swelling is huge for such a tiny chicken.