Started 2 days ago, with laziness, some did not leave coop, then runny nose, and sleeping standing up, Rooster not crowing, hens not laying eggs, and moving very slow. They got wet in the rain last week and then the weather got a bit cooler than normal( went from Lows in the 70's to 50's overnight) other than that nothing much has changed from the normal routine. I have started amprol and a vitamin solution in the drinking water, I have Duramycine also, but have not switched to it but thought I should. Any suggestions would be great! Is this a cold? or what? Thanks zoo very much, Bronk. Florida