BREATHING PROBLEMS HELP PLEASE!!!

[Wholoveshens]

Hi I've five hybrid hens, and they're currently going through their molting season so they appear quite raggy. However one hen I've noticed breathes by opening her mouth and closing it, and now and then gives a loud squeak by arching her head into the air, opening her mouth and making the noise. Also, she has very little neck feathers at the moment so I've noticed all along her neck is a deep red. Can somebody please please help me and tell me if I should worry or not

 

[seminolewind]

Does she have a slow gasp, or panting? She sounds air hungry. I don't know why.

 

[NDChickRancher]

Hi.
I have a hen who is not molting but exhibiting the same symptoms with the opening mouth, squaking and such.

Did you ever figure out what was wrong with your chicken?

Thank you.