My boys and I are new to chickens. We have a variety that are split into 3 separate coops. My son recently brought home a lavender orphanington hen and a red and blue wyndote. They were not in good health and both were under weight. They just didn't look good at all. The day after he put them into the coop we noticed small red bugs under their wings. I was bug ignorant because we had never had any issues whatsoever. We immediately dusted them with 7 dust. About 2 days after that the wyndote had bubbly eyes. After researching, I treated the water and quarantined her for about a week. Wasine is what I used in the water. She seemed to get better and I reintroduced her to the flock. That was about 2 months ago. Over the last two days I have noticed lots of white, egg like clusters around several of my chickens head and neck area. Just today they have started coughing as well. Is this a lice/mite infestation? Is it a respiratory disease? I am diligent about having happy, healthy birds. We had not had ANY issues until we brought home new birds without quarantining them first. At this point, I am overwhelmed and don't know where to start. Do I dust? Spray? Get DE? Do Tylan injections?Dip them? Wasine again? Go all natural? I just want happy, healthy birds! I am willing to do whatever needs to be done, but I just don't know where to start. HELP PLEASE?!