Raised yellow splotches on neck, can you identify?

[Inaneggshell]

One of my Dominant Coppers, Grace, has yellow splotches on the back of her neck and missing feathers. She is also scratching the left side of her face excessively. Also, her belly is bald. Grace lays a large egg nearly every day and I noticed there are often feathers in the nesting box after she leaves.
She lives with 15 other hens and 1 rooster. They have a cement floor coop, deep pine shavings as bedding, and access to outdoor paddock. The only time they are in the coop is to lay in their nesting boxes, to roost and on extremely rainy days (if they choose). They free range when we are working outside. We live in the northwest, rainy and damp.
Grace, named for Grace Jones, has been feisty in the past, not on the bottom of the pecking order, and she is eating, drinking well, continuing to lay. The other day she broke a toenail which seems to be healing, no bleeding. She favors her left foot, but is able to jump to the roost and nesting boxes.
Thank you for your insight in advance!

 

[aart]

The 2nd and 3rd pics are on the back of her neck?
Looks like a huge scab from a wound maybe.

Plucked belly might be because she's broody or going there?
I won't worry about the little scab there.

 

[Inaneggshell]

The 2nd and 3rd pics are on the back of her neck?
Looks like a huge scab from a wound maybe.

Plucked belly might be because she's broody or going there?
I won't worry about the little scab there.

Yes, the second and third pics are of her neck. I haven't noticed any blood that would have indicated a wound, but could have missed it somehow. We have many predators in the area, eagles, hawks, owls, weasels, coyotes ..usual suspects.

Good to know about her possibility of going broody. I was reading about the baldness on her belly. I pull eggs twice a day.

I will continue to keep an eye on her for any changes.

Thank you for your reply! Much appreciated!

 

[aart]

Another thought....could it be poop?
Did she roost under another bird?
Or could be some other gunk that got stuck where she can't preen it off.
Take a sniff. Pick at it a bit.

 

[Inaneggshell]

This morning taking a second look while thinking of injury (not disease) Grace's feathers at the scruff of her neck are dislocated from her body in a clump on some skin. Looks more like a feather boa there.. We are lucky she is healing.

Something possibly pulled them, but not all the way off. When she eats those feathers bob forward. I think I will put a vest on her to hold them down. Is that a bad idea? I don"t know if the feathers will ever magically reattach to her actual neck body. I wish I had spotted this sooner, possibly at that time she would have healed differently.

Poor thing! She laid a big beautiful egg this morning. I went and took her out of the nesting box and will keep encouraging her to not brood.