Molting or pecking

[Chickenmoms]

I have 13 hens no roosters. The run is 10 x12 and coop is 4 x 6 with two roosting shelves and 4 nesting boxes below. Sand and hay checked constantly cleaned coop and run. Every other Saturday diatomaceous earth ash and lime. Every Saturday coop is emptied and scrubbed with water and vinegar. So no mites or other critters I check all constantly when giving them attention
Anyway all of my chickens are missing feathers either from back by tail or neck area. They are also laying eggs normally These are only a couple

 

[sourland]

Space is somewhat limited. Birds are feather plucking/pecking.

 

[Chickenmoms]

Space is somewhat limited. Birds are feather plucking/pecking.

Thank you. I thought 6-7 babies per roosting bar would be enough

 

[sourland]

Roosting space is not the problem. The square footage of the coop is somewhat less than half of what would be needed for that many birds - especially in the winter when dnow is on the ground.

 

[Chickenmoms]

Roosting space is not the problem. The square footage of the coop is somewhat less than half of what would be needed for that many birds - especially in the winter when dnow is

 

[Chickenmoms]

The run is 90% covered. So what you are saying is when they are cold there is not enough room in coop