Hi guys, So I was disappointed once again when I walked into my coop this morning and found another dead chicken. For about 4 months now I have had my chickens slowly dying off one by one. The reasoning is because I bought a hen from a poultry auction and put it with my existing chickens. After 2 weeks I realized the new hen was sick and by then she already had my other chickens sick! I now only have 4 chickens left and my rooster is sick now because he is sneezing and coughing. He has a runny nose. Just like the other chickens that have already died. I think it's some sort of respiratory disease. 2 days ago I bought 6 more week old chicks. Of course they are in the brooder right now but I refuse to put them in that diseased coop. What should I do? How should I clean it? What do I do with the existing sick chickens? I have about 5 weeks to figure something out! I can't see anymore innocent chickens dying from this! Thanks.