Help

[Casa Crazy Chicken Lady]

Hi! I’m asking for some help please!!! This is a very long story but I’ll start with a short of it right now. My chickens were struggling with some respiratory issues after a lot of issues as I said long story, but it is recently bitterly cold obviously causing everything to get worse. Even though they were doing better. But I noticed my one rooster Thyme a light Brahma bantam his waddles started turning slightly purple at the end and I know that can be a serious issue! But I have no idea exactly what to do! As I said, it’s been very cold so obviously automatically want to bring him inside…. But I also know a huge temperature change can be very bad for them! The last several weeks. It has been often in the -20s with windchill and is going to get much worse this weekend with possibly -30s with windchill and not very warm at all during the day mostly staying around zero or so sometimes slightly warmer. What can I do to help him please? Someone help me. I am not sure how to help him get any better or help anyone else from getting this bad I have done multiple rounds of taigard and also ordered a doxycycline which I also did multiple rounds of this was all previously but now with the weather being so much worse, no one is feeling very well again and now with his waddle, I’m very scared! They are all my babies and I am not sure how to help! I do not have that that is very local to me. I would have to travel several hours and would be quite out of the price range! Their coops are insulated and do have radiant heaters in them. If that might be something you need to know any questions you would like to know please ask like I said there’s a long story behind all this seems like my birds have been through quite a bit. Most of them will be two or two soon after march. Thank You- but please be kind I’m trying very hard