One of our BO pullet/hens (when do they really go from being a pullet to being a hen?) doesn't seem to be doing well. She is much smaller than her "sister" (not sure about relation) who was the same size as her a couple of months ago. I think she is losing weight but DH thinks she is just not gaining. Her feathers aren't as fluffy and pretty either. She is very nervous and skittish. The feathers on her head seem to always be raised. Several of the other hens pick on her and she stays away from the rest of the flock. When the others are out exploring the yard, I'll find her alone in the coop eating. Her tail doesn't point up anymore. I know I need to check her for mites, etc but I can't get near her. DH might be able to catch her though. A few months ago, her other "sister" just died mysteriously. None of my other birds are showing any signs of illness. What does this sound like? What would you recommend? I've suggested a couple of times that we should cull her. If she is sick, I don't want the others getting sick too though at this point they've all been exposed to her plenty. We really want a very hardy, low maintenance flock and don't want to breed "weak" birds. But, I feel badly culling her without knowing if its a simple fix. Any thoughts?