Feather loss

[ivyleechick]

I am trying to figure out if we have a mite/lice problem or if our girls are starting to molt. All of our girls have either bald spots or are showing there fuzzy down in spots. We have one that is particularly bad because she was heavily picked on by our rooster and he made her back and the tops of her wings go bald. We got rid of our rooster about 2 months and were hoping that her feathers would grow back, but they haven't. We have also noticed she has a bald patch on her bottom side and the rest of the feathers are pretty dull.
Any help would be greatly appreciated and please let me know if you think we have multiple issues going on. Our girls are 1 year old.

 

[sourland]

Some bird or birds in the flock are feather plucking. Generally it's the bird that is in best feather condition.

 

[ivyleechick]

How do you stop that?