One of my girls is losing feathers and looking sore

[Largemoo]

Hello, hopefully someone might have some ideas to help me.

we've had 3 chickens now for about 6 months. shortly after getting them, one started to lose feathers around the chest area.
Although this has very slowly been getting worse, she shows no signs of distress, she's eating well, laying every day and other than the feather loss seems OK.

I regularly clean the coop out and spray everything with mite spray.
The other 2 are fine with no signs at all.

The feathers have gone from her chest and it looks like the chest is swollen and sore.

I've attached a picture -




Should I be worried? does anyone have any suggestions
Thanks

 

[ForgottenGlen]

The chicken's crop is right there in the front, so that area always looks swollen, unless you are referring to swelling more than usual. Feel her and see if it is her crop or maybe something else. I would say molting, but there are no feathers growing back in, and I don't have enough experience with that.

How old is she now?
Where do you live (hot, cold)?
Do the other girls pick on her?

Here are some molting pics: https://www.backyardchickens.com/t/257565/post-pics-of-your-chicken-with-worst-molt

 

[Largemoo]

hi

she's about 10 months old
we live in a relatively mild climate - London
The others do pick on her a bit but I'd say not excessively
She does look a bit swollen but i suspect it looks worse than it is because of the lack of feathers.

thanks fir your help so far.

 

[ForgottenGlen]

Hopefully someone else will see this, I have never seen this before.