Good evening to all, I went to the coop and noticed my chickens were all sick...!!! They are sneezing, gurgling, some have their one eye closed with foam coming out of it and I even found some blood on the ground...that is not good!!! We started giving them antibiotics (Tetracyclines) right away and I will disinfect the coop tomorrow. I don't want to loose my birds...they are mostly new chickens from this year. Two weeks ago I heard one Cochin sneezing. I did not worry too much as I thought it was due to the dust...but two others started with the same symptoms and now 30 out of 38 are not well. All the chickens were fine before we picked up five adults hens from a different farm. Any ideas what it could be???