I seem to have the weirdest luck with buffs. (Silkies) 1-I have gotten buff eggs from other BYCers in the past and this is the 2nd time one of the buffs doesn't want to grow. She seems good on weight and eats and acts normally, but just stops growing. 2-I also have a buff hen that I got as an adult from a reputable breeder and I've had her since about Christmas. In the last couple of months I've noticed that she is light as a feather. I don't recall if she came like that or not. She eats and acts normally. I've tried worming her, but that hasn't seemed to do anything either. Both of them have been living in my bathtub for about 3-4 days. I had read that the weight issue could be a protein or vitamin deficiency so every day they have been getting boiled eggs as well as yogurt laced with Polyvisol and other vitamin supplements as well as normal feed. I can't tell a difference yet. I don't believe this to be an environmental issue as in the coop they got the exact same feed and water as everyone else. They have also been in other pens with well established, healthy chickens. These guys are not picked on and are not at the bottom of the totem pole. Any ideas?