Hello! I am so concerned for my chickens. They have been getting sick, sneezing, sleeping too much and I don't know what else to do. I have given them antibiotic Tetracycline for 7 days. Waited a few weeks as they were looking better, but sick again. Read of deworming them. I have given them Wazine three times already, with the 3 day break and same thing. Daily I give them basil, oregano. Their coops are cleaned daily. Any suggestions on what else I should do to help them? I took a video, but it won't let me attach.