Hello, One of my Barred Plymouth Rocks (Age 9 months) is clearly in distress today. When I went out to the coop first thing this morning, I noticed 1 hen was making some quiet croaking type noises, stretching out her neck and generally keeping her beak open/breathing funny. Then I noticed that her comb was much darker than all the other birds (I have 16, of 6 different breeds). The entire comb is a purple color, unlike frost bite. She isn't interested in eating or drinking. I put out some treats for all the other birds and she didn't even come over to check it out. Not knowing what her issue is, I immediately brought her into the house in a pet carrier and gave her food and water, but she still shows no sign of eating or drinking. No poop yet either. Basically, it seems like she is having trouble breathing. I don't really see anything wrong other than the dark comb and behavior change, but don't know what to look for really. I am in upstate NY, and there has been a lot of snow, rain, melting, weather change lately, so maybe she caught a cold? If so, what do I do? All the other hens seem perfectly fine. Any help is greatly appreciated. thanks!