The feathers on my Splash Silkie are strange. The sheaths are remaining on at the base. This is appearing a lot in bunches, especially around his neck and under the wings. It is making him very itchy. I have pulled some of them off of him and the entire feather and sheath pop off. It's not hurting him, in fact, I think he appreciates it. Some bleed a little. Some have some fluid. All I know for sure is that he's uncomfortable. It seems like the feathers are not reaching maturity and are creating infection with flakey, itchy skin surrounding them. Is this normal or is something wrong? Any help would be appreciated.