I have one hen who makes a long "crow" sound often. A couple others started with a congestion sound and now more are getting it. I am not sure if the two symptoms are related. Because the congestion sound started spreading so quickly among my birds (31 chickens and 10 turkeys), I am getting worried. I treated them for bacterial respiratory with Duramycin but it did not help. More birds are getting this "cold" sound daily and I am starting to panic. Even my 3 month old turkeys are starting to get it. I have ordered Oxine AH (based on much research on other posts) and will treat them for fungal respiratory but it won't be in until Monday. Does anyone know if it will hurt the birds if I treat them for worms today and then give them the Oxine AH treatment Monday? Also, I read up on wormers and bought Wazine and Ivermectin injectable for cattle and am not sure which one to start with. I do not want to overdose my birds but they need help fast!