Could you get some pictures of their beaks and combs?I believe I found out what it could be. According to what I’m looking at they have fowl pox. And wet fowlpox causes respiratory distress. A few of them have a black beak which they didn’t before. I went through this last year with a couple of them they finally did get better. I heard you put some iodine in their water that helps them. And of course it’s caused from mosquitoes. I heard there’s no cure but I’m trying to study on what I can do to help. Thank you so much for trying to help I really do appreciate it.