HELP! Chicken Making Weird Noises and Struggling to Breath!

[ChattyChickens4Life]

That's great that you have 5 windows - are they closed since it's wintertime or do you have them opened up all the time?
If the vet suspects the cause of her barking is from ammonia, you don't have enough air flow in your coop to remove that from the overnight droppings. No dampness does not mean there are no ammonia fumes.
http://www.backyardchickens.com/a/c...-go-out-there-and-cut-more-holes-in-your-coop

Putting your location in your profile also helps, it gives us a general idea of what part of the world you live in.

I'm glad you were able to seek vet care, what type of antibiotics did she give you?

They aren't windows as in they have glass, but they just have hardware cloth. I guess it is more like I have 5 holes in the coop. 3 are pretty large, and the other two are smaller. The other chickens seem fine now, but the one we took to the vet doesn't. She is very nasally, and is continuing to bark. I'm really worried. I'm not sure of the antibiotics she is on, but I will get back to you. Thanks so much for your help!