Post molt tail feather falling out

[AZGurl]

My EE is 20 months old and molted in September. She grew back all of her feathers as well as her tail but is still not laying again. In the past week, she started losing her tail feathers. Why?? She's happy, eating, clucking, and running around. No rooster in the yard and other 3 sisters do not pluck out her feathers.
Why would she be losing her tail feathers again?? Please help with any suggestions.

 

[aart]

Did you find the feathers or are they just missing?
Are new feathers growing in?
What and how exactly are you feeding?

 

[AZGurl]

I'm finding feathers around the yard and haven't checked to see if new ones are coming in. They all eat layer feed, fresh corn once in a while, soaked grains and blueberries a few times a week and they free-range in our yard. Lots of bugs and grass.

 

[aart]

It's really hard to say if they are 'molting' out ......
or are being pulled out-which can't be eliminated as a cause unless you are literally watching them every second they are awake.

But I'd replace the layer feed with a higher protein 'all flock' type feed...
.....provide oyster shells in a separate container for those who are actually laying to consume.