Dark lumps at the base of tail feathers.
I have a scarlet macaw that I rescued a year ago from a neglectful owner. My macaw,Robert, has pulled out all his body feathers for a very long time before I had him. He has recently developed two dark, bluish bumps at the base of his tail where the feathers grow from. Robert does have his tail feathers, primary wing feathers and head feathers he can not reach. All these feathers and their colors grew fuller and in brighter colors now that he is on a proper good diet. These dark bumps have just started to appear. He is molting now as well. Are these bumps normal? Is there a way to stop his feather pulling? Thank you, Cynthia