New mama bird with weird skin issue?

[Miriahbrown]

I'm trying to find out if something is wrong with our mama bird. She hatched chicks 3 weeks ago today and has been an excellent mama. She used to sleep in the elevated coop, but has been ground level under the coop in a wire crate the last 5 weeks or so. She is an Orpington and is on a 20% protein food with supplemental oyster shell available. She hasn't been laying and all has seemed quite normal until my daughter noticed that above her tail she has a patch where she is missing feathers and the skin looks purple(ish) and different than a typical molt.

I know broody/mama hens have a molt at some point and don't know if this is simply that or if she has a pest problem or something. Would appreciate any thoughts or advice. We sprayed it with Vetericyn earlier, just as a precaution.

 

[Chicken_Obsesser]

@Wyorp Rock does this look like mites to you?

 

[Miriahbrown]

Here are some more pictures - she was dusty from dust bathing so we rinsed the area to be able to see it better. She is still wet in these photos.

We have two pics of the spot above her tail and one of her from behind - which isn't necessarily an area we were concerned about. Just looks like molting there to me it's the area above the tail that just looks odd

 

[Wyorp Rock]

I see her oil gland and new pin feathers coming in, I don't see anything that stands out. Sometimes pin feathers can have a deep color to them since they have blood in them.

Most broody hens do not lay eggs while brooding. She'll resume once she weans the chicks and goes through a molt.

She hatched chicks 3 weeks ago today and has been an excellent mama. She used to sleep in the elevated coop, but has been ground level under the coop in a wire crate the last 5 weeks or so. She is an Orpington and is on a 20% protein food with supplemental oyster shell available. She hasn't been laying and all has seemed quite normal until my daughter noticed that above her tail she has a patch where she is missing feathers and the skin looks purple(ish) and different than a typical molt.