One of my 3 hens (2 years old?) has a pale comb and her feathers look dull, almost as if she's dusty. She's been like this for probably two weeks. I have another hen that usually looks just like her and her feathers are still shiny (visible in the picture). She hasn't lost weight and she's not acting lethargic or anything. Apart from the comb, I wouldn't think anything was wrong with her. This morning I noticed a couple of dark spots on her comb too - small, right on the tips. I've seen some runny poop on the floor of the coop, though I don't know for sure who it's from. None of my hens are laying eggs due to the cold weather and because I haven't put a light in their coop yet. It has been very cold here. I'm in Northern MN. This morning I gave them Wazine-17, which is all I could find locally. I've owned them for 4 months now (they came with my hobby farm I bought in August) and haven't wormed them before. Could it just be molting or because of the weather and not laying? My other two hens and one rooster all appear normal. Thanks for any advice!