Odd looking fluffy feathers on back near tail...Molting? (Pics included.)

[grnidone]

One of my hens has fluffy feathers on her back near her tail. Is she molting? The feathers have gotten fluffier and stick up more with each passing day.

 

[Beekissed]

Molting or rooster wear.

 

[grnidone]

Ok. I will outfit her with in apron.

 

[CWP1966]

My barred rocks look the same. They are also missing feathers around the vent/butt too. I didn't think they would molt the first year. It's not red around the vent area. No mites or lice. The other hens are fine. These are 9 months old and lay very well. Out of this one coop/run I have I'm getting 7 to 10 eggs a day out of 10 hens. Short days and cold here too. I've got some second year birds that are having a terrible molt. No eggs in at least 6 to 8 weeks. Maybe 1 or 2 a week out of 10. I have more that were hatched the 1st of June. They just started laying. I wonder too what causes that. It's not from the roo riding them. Maybe a mini molt? Maybe self pecking or others pecking for protein.