I have 10 chickens. I raised 7 of them and I just bought 3 new chickens from a flee market and I think I made a huge mistake! Every chicken I have is sick now and I believe it's infectious bronchitis because they have laid funny looking eggs, have discharge coming from their nostrils, and making rattling sounds when breathing! What should I do I'm so torn! I really really like my chickens and don't want to cull all of them I am willing to have a closed flock but will eggs be safe to eat after they stop showing symptoms? I have put a lot of time and effort into these chickens and really don't want to cull someone please help me decide what to do!