I just started raising Silkie Chickens and I feel like I have had some bad luck. I got 3 pullets from a breeder. After a week, one pullet was pretty sick. Wasn't sure what was wrong with her, but we decided it was neurological. We put her down. Over a month later, I noticed one of my other pullets didn't seem as Peppy as she used to. As I picked her up and examined her, I noticed she had diarrhea all over her back end. It was all green diarrhea with a little mucus. No blood. I cleaned her up last night, and gave her a B12 shot. Today after I got off of work, my husband checked on her and she had died. So the question is.....What should I do now? Both of my other pullets are fine. Very lively, running around pecking and preening. Tomorrow I plan on cleaning the coop out really well with bleach water, and put fresh pine shavings down everywhere. I keep vitamins in their water at all times. Does anyone know what this could have been? Or what else I should do besides cleaning the coop extremely well? I would be very grateful for any advice.