I have been having trouble with my chickens picking feathers for the longest time. I have tried EVERYTHING!!! I've tried pine tar, more protein, free ranging even leaving the door open on the chicken for an entire week so they wouldn't be cooped out and while i have seen marginal sucess, it has not totally stopped. Recently my chickens began molting and one of them regrew all her tail feathers while the others are bare butted. I am now wondering if this is the devil chicken in my flock or if she's just smart enough to not get her feathers pulled. What are your opinions?