Is this Sour Crop, Fungal or a Respiratory infection???! Symptoms: Fowl Breath Sneezing Gooey Eyes some slight gurgling sounds. Coop environment: Muck soil indoor coop has hay and some saw dust. Could moldy hay cause all of this? This has been going on for a few weeks. I culled the two hens that i believe brought it into my coop. 1 of those hens showed symptoms the other did not. I'm wondering if they acquired it here or not and if it is even something that is contiguous given the rest of the flock seems healthy I have a total of 5 Chickens. 2 bantys 1 Silver dorking 1 silver laced 1 production red The only two out of those 5 showing symptoms are my bantams. 1 has all symptoms above the other only has the Fowl Breath and thats it. The rest act completely healthy. Im at a loss. If this a respiratory thing i know i cant treat with antibiotics, but they would be carriers and i don't want my flock to be carriers of this as i intend to Raise and sell Chicks. I will cull if necessary (even though it will break my heart) Do i only need to Cull the sick or all of them even if they are healthy? PLEASE HELP ME SOMEONE I NEED TO MAKE THIS CHOICE TODAY. I DONT WANT IT PASSING ON TO ANYONE ELSE!! Im ready to go home from work and Strip my coop of everything and bleach the heck out of it.