A week ago I lost one of my black austrolarps for unknown causes. All I had noticed was an excessive amount of white on her butt feathers. She died a couple of days after I noticed it. Now I have another black austroplarp and I am seeing alot more white than usual...can someone please help me understand what this means and if its going to kill this hen.... I have picture I just took: Its all white down her back end...her vent looks clear.